Extruded and Molded Rubber Products

JB Rubber provides a variety of custom extruded and molded rubber products including rubber gaskets, seals, bumpers and a variety of other applications. We can supply custom extruded profiles in a variety of shapes and lengths with a rubber compound specifically designed to meet your requirements. We supply prototype extrusions as well as high volume production.

The extrusion process is accomplished by heating and shearing uncured rubber through the use of a temperature controlled auger screw, which pressurizes and forces the softened rubber through an extrusion die at the auger's output in a continuous fashion. A profiling extrusion die is fixed to the auger's outlet and the softened rubber takes on the shape of the die as it flows through it, resulting in a continuous strip of the desired profile. A variety of post extrusion curing can be done, depending on type of polymer.

Extruded Rubber Profiles

With our in-house formulation and mixing capabilities, we can design a rubber compound to meet your specific requirements for quality and performance.


  • CR (NeopreneĀ®)
  • EPDM (ethylene propylene)
  • IIR (butyl)
  • NBR (nitrile/buna n)
  • NR (natural rubber)
  • SBR (styrene butadiene)


  • Microwave and autoclave (steam) vulcanization
  • Cut-to-length and continuous length extruded profiles
  • External identification printing


  • Extruded profile sizes range from +.250" to +2.500"
  • Extruded profile wall thickness minimum .060"
  • External identification printing


  • D-, E-, H- and U-Channels
  • U-Channels with Bulbs
  • I-, L-, P- and T-Shaped Strips
  • Full Round Cord
  • Half Round Cord
  • Square Strips
  • Rectangular Strips
  • Mandrel Shaped Hoses, Elbows and Assemblies

Molded Rubber Components-Bonded-To-Substrates

JB Rubber Products has the specialized expertise to bond molded rubber components to many materials for whatever application you require. This includes multiple substrates and other combinations. Whatever your specifications, we can design a high-quality solution that performs best for you.

  • In-house compound formulation development and mixing capabilities.
  • Over 100 formulations developed.
  • 20 engineering grade polymers.
  • Wide variety of compound characteristics.
  • A range of specifications and properties.

Rubber-To-Substrate Materials

  • Aluminum
  • Brass
  • Bronze
  • Carbon Steel
  • Ductile Iron
  • Fabric Reinforcement
  • Glass-Filled Composites
  • Mineral-Filled Composites
  • Nylon
  • Stainless Steel

Multiple Substrate Material Combination Molding

  • Rubber-to-metal-to-plastic-combinations
  • Valve and Control Assemblies
  • Vibration Isolators
  • Vibration Mounts
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