Custom Gaskets & Seals

A.J. Rubber & Sponge Ltd. is an industry leading producer of high quality die cut custom gaskets and seals, and die cut products manufacturing. We specialize in custom gasket and seal manufacturing for a variety of industrial applications, including but not limited to:

  • Aerospace & aviation industry
  • Oil & gas drilling, production & refining industries
  • Machinery, heavy equipment & transformer manufacturers
  • Heating, air conditioning, & plumbing industries
  • Steel mills
  • Utilities, power generation & tank car manufacturers
  • Transportation, electronic, & hi-tech industries
  • Pumps & compressors
  • Engines: gas, diesel & turbine
  • Military, department of defense & ship building industry
  • Appliance & small tool
  • Chemical & petro-chemical industry
  • Furnace & boiler manufacturers
  • Pulp & paper processing plants
  • Construction & contracting industry
  • Foundry, steel & mining companies
  • And many others

As custom gasket and seal fabricators, we have built a solid reputation for being reliable, affordable and time conscious with projects of all sizes. Our main objective is to continue to not only meet, but exceed our clients expectations by providing them with high quality custom gaskets and seals for use in their specific and unique application. We are best known for our competitive pricing, on-time delivery, attention to detail and exceptional customer service. A.J. Rubber & Sponge Ltd. maintains a modern manufacturing facility in Hamilton, Ontario equipped with capable die cutting machinery that enables us to consistently meet all blueprint specifications and tolerance requirements for custom seal and gasket products.

A.J. Rubber & Sponge Ltd. takes great pride in our ability to consistently and accurately produce custom gaskets and seals that are guaranteed to meet exact specifications and function as intended within their application:

  • EPDM (ethylene propylene diene monomer rubber) custom gaskets
  • SBR (red rubber) custom gaskets
  • Flange custom gaskets
  • Neoprene custom gaskets
  • Closed cell sponge custom gaskets
  • Cloth-inserted rubber custom gaskets
  • Foam custom gaskets
  • Compressed non-asbestos custom gaskets
  • Silicone custom gaskets
  • Polyurethane foam custom gaskets
  • Rubber custom gaskets
  • Nitrile (buna-n) custom gaskets
  • Rubber washers
  • Silicone sponge custom gaskets

Non-metallic materials we have available for use in die cut custom gaskets and seals fabrication include:

  • Silicone foam
  • Solid rubber ie. neoprene, EPDM (ethylene propylene diene monomer rubber), SBR (red rubber) etc.
  • Polyester & polyether open cell foams
  • PVC (polyvinyl chloride) foam
  • Microcellular urethane
  • Sound absorbing foam
  • Neoprene/EPT (ethylene-propylene-terpolymer)/SBR (styrene butadiene rubber) blended closed cell sponge
  • EPDM (ethylene propylene diene monomer rubber) closed cell sponge
  • Vinyl nitrile closed cell sponge
  • SBR (red rubber) food grade closed cell sponge
  • Crosslinked polyethylene
  • ECH (epichlorohydren)
  • Silicone rubber

If the material you require is not listed above, simply ask us what you’re looking for! We are capable of sourcing and producing any type of non-metallic custom gasket or seal for any industry.

A.J. Rubber & Sponge Ltd. has over 45 years of industry experience, specializing in the manufacturing of precision die cut custom gaskets and seals and die cut products for a wide range of industries and applications. We employ several different methods of die cutting, depending upon our customers requirements, and we even have the ability to completely customize a custom gasket or seal fabrication production run. Depending on the specific requirements of the production run, the custom gaskets and seals we manufacture can be die cut or processed using the following methods:

  • Steel rule die cutting
  • Sheeting
  • Rotary die cutting
  • Roll slitting
  • Kiss cutting
  • Punch pressing
  • Flatbed horizontal splitting

Our various die cutting and material manipulation services enables us to meet the specifications of all of your parts. A.J. Rubber & Sponge Ltd. relies on customers and vendors for steel rule dies to ensure accuracy. We also keep a large number of steel rule dies on hand for you to browse through in order to get an idea of our custom gasket and seal manufacturing capabilities. We do everything we can to ensure production costs remain stable, and that we are capable of meeting tight tolerances. We provide die cut custom gaskets and seals in quantities ranging from sample prototypes and short runs to large production runs of hundreds of thousands of pieces. All of the custom gaskets and seals we fabricate for our clients are custom designed and manufactured to meet their outlined specifications. We are capable of supplying precision custom gaskets and seals and custom die cut parts that will perform efficiently for their intended purpose.

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