Other Gaskets

Closed cell silicone sponge custom gaskets:

In addition to custom neoprene gaskets, A.J. Rubber & Sponge Ltd. produces closed cell silicone sponge custom gaskets. Commonly known as expanded silicone, this type of custom gasket is available in thicknesses between 1/16" to 2". Our closed cell silicone sponge custom gaskets are impermeable to moisture absorption under numerous applications. Closed cell silicone sponge custom gaskets have many unique properties:

  • Extremely soft compared to solid silicone gaskets.
  • Comprised of a closed cell structure making them highly water resistant.
  • Their hard density is defined by a compression force of 25% at a PSI range of between 14 and 20 PSI.
  • Derived from an uncured silicone gum source which expands to a desired size through a specialized manufacturing process.

To learn more about A.J. Rubber & Sponge Ltds. closed cell silicone sponge custom gaskets, or custom neoprene gaskets, and how either can assist you in your commercial or industrial application, please contact us today.

Closed cell neoprene sponge custom gaskets:

Just like our custom neoprene gaskets, A.J. Rubber & Sponge Ltds. closed cell neoprene sponge custom gaskets can be used in a diverse range of industrial or commercial applications. Our closed cell neoprene sponge custom gaskets are commonly used as seals in devices that are constantly exposed to extreme chemicals, weather elements and other volatile forces such as ultraviolet (UV) light radiation, rain, snow, hail, sleet, direct sunlight, and oil, gasoline, acid, or ozone exposure. Often they are used in the oil and gas and automotive manufacturing industries, though they can also be applied to a variety of apparatus in the areas of clothing manufacturing, electronics production, medical equipment fabrication, aerospace and military equipment production, and the assembly of engines for airplanes, trucks, cars, buses, trailers and watercraft.

A.J. Rubber & Sponge Ltd. die cuts, kiss die cuts and applies PSA (pressure sensitive adhesive) to our closed cell neoprene sponge custom gaskets. Our closed cell neoprene sponge custom gaskets fall within a family of synthetic rubbers and possess many beneficial characteristics, including:

  • Temperature operating ranges of -56.7°C to 93.3°C (-70° F to + 200° F).
  • Superior heat resistance making them ideal for industrial or commercial applications exposed to extremely high temperatures over long periods of time.
  • Resistant to the adverse effects of natural and synthetic oils as well as acid, gasoline and other chemicals.
  • Resistant to tears or damage caused by flexing and/or twisting.
  • Suitable for long term outdoor applications such as weather stripping or electrical enclosures.
  • Resistant to ozone, ultraviolet light, sunlight and many other extreme weather elements
  • Much better at resisting burning than rubbers that are composed exclusively of hydrocarbon chains.

A.J. Runner & Sponge Ltd. specialize in the production of custom gaskets such as custom neoprene gaskets and closed cell neoprene sponge custom gaskets. We have supplied a number of industrial and commercial businesses with closed cell neoprene sponge custom gaskets to help them overcome issues requiring sealing under high temperatures and enormous pressures over extended periods of time. Our closed cell neoprene sponge custom gaskets are engineered to stay firmly in place and provide long-lasting permanent sealing for various applications. For more information on our closed cell neoprene sponge custom gaskets, or our custom neoprene gaskets, please give us a call today. For technical data on A.J. Rubber & Sponge Ltds. closed cell neoprene sponge custom gaskets, please click on the following links:

AJ-42 spec sheet AJ-43 spec sheet AJ121 spec sheet

Closed cell EPDM (ethylene propylene diene monomer rubber) sponge custom gaskets:

Besides custom neoprene gaskets, A.J. Rubber & Sponge Ltd. produces closed cell EPDM (ethylene propylene diene monomer rubber) sponge custom gaskets. Our closed cell EPDM (ethylene propylene diene monomer rubber) sponge custom gaskets offer excellent resistance to ozone and oxidation, and possess superior aging properties and compressibility. Closed cell EPDM (ethylene propylene diene monomer rubber) sponge custom gaskets are used in a variety of outdoor applications such as weatherproofing or electrical enclosures. Temperature operating ranges are from -51.1°C to 98.9°C (–60° F to 210° F). For further information on A.J. Rubber & Sponge Ltds. custom neoprene gaskets, or our closed cell EPDM (ethylene propylene diene monomer rubber) sponge custom gaskets, please contact us today. For technical data on our closed cell EPDM (ethylene propylene diene monomer rubber) sponge custom gaskets, please click on the following links:

EPDM-41 spec sheetEPDM-43 spec sheet

Closed cell vinyl nitrile sponge custom gaskets:

In addition to custom neoprene gaskets, A.J. Rubber & Sponge Ltd. also manufactures closed cell vinyl nitrile sponge custom gaskets. Also referred to as “expanded rubber”, closed cell vinyl nitrile sponge is comprised of cells that resemble balloons which seal in gas as well as prevent moisture from escaping (so long as the walls of the sponges cells remain intact). Closed cell vinyl nitrile sponge custom gaskets are very versatile, boasting an application temperature range of -40°C to 82°C (-40°F to 180°F). Closed cell vinyl nitrile sponge custom gaskets have a slightly lower density profile than most other closed cell sponge products, and slightly higher water absorption properties than closed cell neoprene rubber gaskets. Please get in touch with A.J. Rubber & Sponge Ltd. to learn more about the custom neoprene gaskets, or closed cell vinyl nitrile sponge custom gaskets that we fabricates. For technical data on our closed cell vinyl nitrile sponge custom gaskets, please click on the following link:

AJ310 spec sheet

Closed cell ECH (epichlorohydene) sponge custom gaskets:

Just like our custom neoprene gaskets, A.J. Rubber & Sponge Ltds. closed cell ECH (epichlorohydene) sponge custom gaskets can be used in a diverse range of commercial and industrial applications. Our closed cell ECH (epichlorohydene) sponge custom gaskets are commonly used in the automotive manufacturing industry, and are often specifically incorporated into under-the-hood applications. Our closed cell ECH (epichlorohydene) sponge custom gaskets have many unique characteristics, such as:

  • Able to handle continuous temperatures of up to 150°C (300°F),
  • Resists exposure to light oil and fuel
  • Resists various types of harsh weather, sunlight, ozone and

Get in touch with A.J. Rubber & Sponge Ltd. to further explore our custom neoprene gaskets or closed cell ECH (epichlorohydene) sponge custom gaskets. For technical data on our closed cell epichlorohydene sponge custom gaskets, please click on the following link:

aj ECH spec sheet

SBR (styrene butadiene rubber) sponge custom gaskets:

Besides custom neoprene gaskets, A.J. Rubber & Sponge Ltd. manufactures SBR (styrene butadiene rubber) sponge custom gaskets. Otherwise known as GRS and buna-S or buna S gaskets, our SBR (styrene butadiene rubber) sponge custom gaskets have a wide range of beneficial properties, including:

  • Excellent abrasion resistance.
  • Superior stability over a range of environments.
  • Very resistant to fats, minerals, natural and synthetic oils, aliphatic hydrocarbons, aromatic hydrocarbons and chlorinated hydrocarbons.
  • Transitions into glass at a temperature of approximately -55°C (131°F).
  • Have a recommended temperature range of -40°C to 100°C (-40°F to +212 °F).
  • Typically have an elongation percentage of between 450–500%).

At A.J. Rubber & Sponge Ltd., we fabricate SBR (styrene butadiene rubber) sponge custom gaskets for a variety of applications including the manufacturing of pneumatic tires and tubes, footwear heels and soles and a number of other manufacturing applications for commercial and industrial use. Although our SBR (styrene butadiene rubber) sponge custom gaskets are highly versatile, they are not very resistant to sunlight, ozone, rain or other extreme weather elements, and are therefore not recommended for any type of electrical application. For more information about A.J. Rubber & Sponge Ltds. SBR (styrene butadiene rubber) sponge custom gaskets, or custom neoprene gaskets, please give us a call. For technical data on our SBR (styrene butadiene rubber) sponge custom gaskets, please click on the following link:

AJ8511 spec sheet

Silicone foam custom gaskets:

In addition to custom neoprene gaskets, A.J. Rubber & Sponge Ltd. also fabricates silicone foam custom gaskets (otherwise known as foam silicone custom gaskets within the cellular foam, rubber and sponge products industry). A.J. Rubber & Sponge Ltd. supplies commercial and industrial clients with two different types of silicone foam custom gaskets:

Open cell silicone foam custom gaskets

These silicone foam custom gaskets are lightweight and are produced via a specialized process using liquid silicone ingredients as the base material. Open cell silicone foam custom gaskets are low in density, and may allow moisture to escape. They tend to be best used as shock or vibration gaskets such as those found in automotive applications.

Closed cell silicone foam custom gaskets

These silicone foam custom gaskets work well as moisture and environmental seals, as they are extremely durable and resistant to environmental fluctuations due to silicones low toxicity, high density and relatively low compressive forces.

Regardless of what type of silicone foam custom gasket you choose for your specific application, with appropriate coverage achieving long term moisture or weather seals with A.J. Rubber & Sponge Ltds. silicone foam custom gaskets is possible thanks to recent advancements in technology in the custom gasket manufacturing industry. Our silicone foam custom gaskets are similar to silicone sponge custom gaskets, but the manner by which they are produced makes them unique to one another. A.J. Rubber & Sponge Ltds. silicone foam custom gasket manufacturing process includes:

  • Kiss die cutting
  • Custom assemblies
  • Die cutting
  • Horizontal splitting
  • Roll slitting

We are capable of applying a wide variety of PSA (pressure sensitive adhesives) to all silicone foam custom gaskets that we produce. Some of the value-added benefits of A.J. Rubber & Sponge Ltds. silicone foam custom gaskets are:

  • They possess tremendous UV (ultraviolet) light and ozone resistant properties due to the inorganic backbone of their molecular structure, which is the foundation for their long term performance.
  • They have a wide temperature operating range of approximately -53°C to 201°C (-65°F to 395°F).
  • They are resistant to decay by aging or degradation from sunlight.
  • Both open cell silicone foam custom gaskets and closed cell silicone foam custom gaskets can be used for blocking out dust which makes them ideal for use in manufacturing plants, industrial buildings, production facilities and other general industrial applications.
  • They offer excellent compression set resistance (the materials ability to rebound to its original thickness upon being compressed).
  • They have a number of intrinsic flame resistant properties.

A.J. Rubber & Sponge Ltds. popular silicone foam custom gaskets can be used to seal in liquids in high-pressure applications, or seal out light, air and dust in low-pressure environments. To learn more about the silicone foam custom gaskets, or custom neoprene gaskets, that we manufacture, please get in touch with us today.

Acoustic foam custom gaskets:

Just like our custom neoprene gaskets, A.J. Rubber & Sponge Ltds. acoustic foam custom gaskets can be employed for a variety of uses in a vast array of industrial and commercial environments, especially those involving noise reduction, thermal insulation and/or vibration control (such as in the automotive assembly industry). Acoustic foam custom gaskets are readily converted by A.J. Rubber & Sponge Ltd. in both plain and self adhesive (PSA – pressure sensitive adhesive) backed formats (one or more sides). The thickness of acoustic foam custom gaskets ranges from:

  • 1mm up to 100mm thick - without lamination/PSA (pressure sensitive adhesive)
  • Greater than 100mm - with lamination/PSA (pressure sensitive adhesive)

For more information on A.J. Rubber & Sponge Ltds. custom neoprene gaskets, or acoustic foam custom gaskets, please get in touch with us today.

Polyurethane foam custom gaskets:

Besides custom neoprene gaskets, A.J. Rubber & Sponge Ltd. manufactures polyurethane foam custom gaskets for use in commercial or industrial applications including, but not limited to:

  • Cushioning
  • Dust sealing
  • Moisture sealing
  • Thermal & acoustic insulation

Polyurethane foam is an economical type of open cell flexible foam material that is commonly incorporated in the manufacturing process of custom gaskets. Our polyurethane foam custom gaskets are readily available with PSA (pressure sensitive adhesive) backing as an option. Contact A.J. Rubber & Sponge Ltd. to learn more about our polyurethane foam custom gaskets, or custom neoprene gaskets. For technical data on our polyurethane foam custom gaskets, please click on the following link:

AJ702-2 spec sheet

Microcellular urethane foam custom gaskets:

In addition to custom neoprene gaskets, A.J. Rubber & Sponge Ltd. also produces microcellular urethane foam custom gaskets for a number of commercial or industrial uses. Our microcellular urethane foam custom gaskets provide superior compression set resistance and are very resilient, producing a gasket seal that will not break down over extended use. These characteristics of our microcellular urethane foam custom gaskets allow them to be used in a vast range of applications, and will perform well under the temperature range of -40°C -90°C (-40°F to 194°F). For additional information on A.J. Rubber & Sponge Ltds. microcellular urethane foam custom gaskets, or custom neoprene gaskets, please contact us today.

Cross-linked polyethylene foam custom gaskets:

Just like our custom neoprene gaskets, A.J. Rubber & Sponge Ltds. cross-linked polyethylene foam custom gaskets can be used in an array of industrial and commercial environments. Our cross-linked polyethylene foam custom gaskets have many advantageous properties making them ideal for a large variety of industry-specific applications:

  • Ideal gauge control
  • Resistance to high temperature
  • Low water absorption
  • Superior thermal insulating
  • Excellent chemical resistance
  • Smooth surface
  • Excellent consistency

Get in touch with A.J. Rubber & Sponge Ltd. to learn more about the cross-linked polyethylene foam custom gaskets, or custom neoprene gaskets, that we fabricate. For technical data on our cross-linked polyethylene foam custom gaskets, please click on the following link:

AJ199 spec sheet

SBR (styrene butadiene rubber) custom gaskets:

Besides custom neoprene gaskets, A.J. Rubber & Sponge Ltd. fabricates SBR (styrene butadiene rubber) custom gaskets for use in a range of commercial and industrial applications. Also known as GRS, buna-s and buna s, SBR (styrene butadiene rubber) is a versatile material that features the following unique properties:

  • Has a typical elongation percentage of approximately 500%.
  • Has a recommended temperature operating range of -40°C to 100°C (-40°F to +212 °F).
  • Transitions into a glass-like substance at a temperature of approximately -55°C (131°F) (also referred to as the “glass transition temperature”).

SBR (styrene butadiene rubber) custom gaskets are commonly incorporated into the manufacture of pneumatic tires, tubes, footwear heels and soles, as well as for many other industrial and commercial uses. As they are not resistant to ozone, sunlight, rain, sleet, snow or other harsh weather elements, SBR (styrene butadiene rubber) custom gaskets are not recommended for use in any type of electrical application. To learn more about A.J. Rubber & Sponge Ltds. SBR (styrene butadiene rubber) custom gaskets, or custom neoprene gaskets, please contact us today.

Nitrile rubber custom gaskets:

In addition to custom neoprene gaskets, A.J. Rubber & Sponge Ltd. also manufactures nitrile rubber custom gaskets for a variety of industrial and commercial applications. Also referred to as buna-n rubber, nitrile rubber belongs to a family of synthetic rubber custom gasket materials that are comprised of a copolymer of acrylonitrile and butadiene. Our nitrile rubber custom gaskets physical and chemical properties can vary depending on the composition of the specific acrylonitrile species involved. For example, the higher the concentration of acrylonitrile in the polymer, the higher the nitrile rubber custom gaskets resistance to oils will be. This particular property, however, can compromise the flexibility of the custom rubber gasket, making it more rigid.

Nitrile rubber custom gaskets tend to be highly resistant to:

  • Oil
  • Gasoline
  • Diesel
  • Grease
  • Other types of abrasive chemicals

Their resistance to these harsh substances makes A.J. Rubber & Sponge Ltds. nitrile rubber custom gaskets an ideal choice for use in applications where components are exposed to corrosive chemicals on a regular basis. A.J. Rubber & Sponge Ltd. does not manufacture nitrile rubber o-rings or nitrile rubber molding components, nor do we employ the trade names Eroprene, Nipol or Krynac. Our Hamilton, Ontario based production facility is fully capable of custom fabricating nitrile rubber custom gaskets of all shapes and sizes using our die cutting presses and other related machinery.

A.J. Rubber & Sponge Ltd. has over 45 years of experience producing nitrile rubber custom gaskets for use across a wide variety of applications and industries. To learn more about our nitrile rubber custom gaskets capabilities, or our custom neoprene gaskets, please give us a call today.

CI (cloth inserted) rubber custom gaskets:

Just like our custom neoprene gaskets, A.J. Rubber & Sponge Ltds. CI (cloth inserted) rubber custom gaskets can be used in an array of industrial and commercial environments. Our CI (cloth inserted) rubber custom gaskets are composed of a rubber sheet material that is reinforced with one or more plies of cloth (usually polyester, nylon, cotton and/or fiberglas), for added strength and stability. This makes our CI (cloth inserted) rubber custom gaskets ideal for use in flanged custom gasket applications requiring mechanical fastening, or where mechanical tension due to compression loads is high. CI (cloth inserted) rubber custom gaskets are best suited for applications where hot or cold water and gases are being transferred, such as:

  • Regulators
  • Booster pumps
  • Diaphragms
  • Water meters
  • Control devices
  • Batching devices

Get in touch with A.J. Rubber & Sponge Ltd. to learn more about the CI (cloth inserted) rubber custom gaskets, or custom neoprene gaskets, that we produce.

Military specification rubber custom gaskets:

A.J. Rubber & Sponge Ltd. takes great pride in our responsibilities as a defense contractor for the Canadian and U.S. military Department of Defense, and other global counterparts. We custom manufacture a variety of military specification rubber custom gaskets, including custom neoprene gaskets, for use in sealing devices that meet military requirements and standards. The standards for military specification rubber custom gaskets are designed to ensure that elastomeric materials support military missions by meeting necessary performance requirements. Military specification rubber custom gasket suppliers are usually somewhat familiar with these standards, but may not fully understand how the details of a particular gasket specification can affect purchasing and manufacturing decisions from the standpoint of the military. This is where A.J. Rubber & Sponge Ltd. has an advantage.

As our technology advances, so do the design and production methods of military specification rubber custom gaskets, which ensures that they have the ability to withstand aggressive environments. Military specification rubber custom gasket performance is considerably affected by drastic fluctuations in temperature, and this is something that needs to be considered at the time of choosing appropriate gasketing materials. A.J. Rubber & Sponge Ltd.’s military specification rubber custom gaskets are capable of being used in environments with continuous service temperatures as low as -51ºC to as high as 200ºC (-60ºF to 401ºF). We support North American defense by supplying military specification rubber custom gaskets, custom neoprene gaskets, or any sort of military specification gaskets that may be required. Please contact us to further explore the military specification rubber custom gaskets that A.J. Rubber & Sponge Ltd. produces.

Silicone rubber custom gaskets:

Besides custom neoprene gaskets, A.J. Rubber & Sponge Ltd. produces silicone rubber custom gaskets for use in a wide range of commercial and industrial applications for a few important reasons:

  • Silicone rubber is an excellent insulator of electricity.
  • It is superior to conventional rubbers in terms of tensile strength, elongation, tear strength and compression set.
  • Due to silicone rubbers inert property, it will not react with most chemicals in any given environment.
  • It is highly resistant to environmental factors such as ozone exposure, ultraviolet (UV) radiation, heat or any other factor contributing to the custom gaskets aging process.
  • Silicone rubber is designed to be operational between extreme temperatures of -55°C and +300°C (-67°F and 572°F).

These properties make silicone rubber custom gaskets ideal for use in:

  • Silicone gum in the compression molding process.
  • Any high altitude / high temperature sterilization environment in the aerospace or medical industries.
  • Molding applications in the medical industry.
  • Production of implants.
  • Electrical connector insert applications in electronics manufacturing.

Silicone rubber custom gaskets contain a "backbone" of silicon-oxygen links as opposed to the carbon to carbon (C to C) backbone found in traditional, organic rubber, making it a very versatile custom gasket for use in many different applications. Please contact A.J. Rubber & Sponge Ltd. to learn more about the silicone rubber custom gaskets, or custom neoprene gaskets, that we manufacture.

EPDM (ethylene propylene diene monomer) rubber custom gaskets:

In addition to custom neoprene gaskets, A.J. Rubber & Sponge Ltd. has the expertise and the capability to die cut EPDM (ethylene propylene diene monomer) rubber custom gaskets to exact specifications for use in any industry. Best known for their superior resistance to harsh and toxic chemicals, EPDM (ethylene propylene diene monomer) rubber custom gaskets are most ideal for sealing environments that are not exposed to any type of:

  • Aliphatic hydrocarbons
  • Halogenated solvents
  • Concentrated acids
  • Oil
  • Gasoline
  • Kerosene
  • Aromatics

Our EPDM (ethylene propylene diene monomer) rubber custom gaskets can typically withstand temperatures ranging from -50°C to 150°C (-58°F to 302°F), and effectively function as a source of noise reduction / acoustic insulation in the automotive industry. EPDM (ethylene propylene diene monomer) rubber custom gaskets are an excellent source of producing gasket sealing against atmospheric conditions including sunlight, ozone, ultraviolet (UV) light exposure, wind, rain or other severe weather elements. Should you require additional information on the EPDM (ethylene propylene diene monomer) rubber custom gaskets, or custom neoprene gaskets, that A.J. Rubber & Sponge Ltd. manufactures, please contact us today.

Polyethylene Gaskets:

Just like our custom neoprene gaskets, A.J. Rubber & Sponge Ltds. polyethylene gaskets can be applied to a wide range of industrial or commercial environments. We are capable of die cutting, kiss die cutting and applying PSA (pressure sensitive adhesive) to our polyethylene gaskets which possess a high degradation rate. Our more than 45 years of experience in the custom gasket and seal manufacturing industry has taught us that polyethylene gaskets are best suited for the following applications:

In the assembly of large engines, for airplanes, trucks, cars, buses, trailers and various types of watercraft.

  • For sealing apparatus that are under extreme pressure, such as electrical appliance doors.
  • Where atmospheric temperatures remain consistently low (although they are able to effectively perform in moderate temperature environments).
  • As seal liners around doors, windows and other openings.
  • Any other application where the seal is often broken and re-established.

To learn more about A.J. Rubber & Sponge Ltds. polyethylene gaskets or custom neoprene gaskets, please get in touch with us. Should you require technical data on our polyethylene gaskets, please click on the following link:

AJ199 spec sheet
Custom Neoprene Gaskets Other Gaskets

Get In Touch