Rubber Molding

Injection molding is an extremely efficient way to mold rubber. The injection screw pre-heats the material before forcing it into the cavities. This decreases the viscosity of the material, allowing it to flow more easily.

Injection molding offers decreased cure time because of more rapid cavity filling, and the material is well on its way to being cured as a result of the heat added during the screw charging and shear created during injection.

Over-molded components are able to be manufactured with this process.


  • Injection Molding
  • Injection Over-Molding
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Rubber Molding, Injection Molding, Over Molding — Ottawa Rubber Company


  • Natural Rubber (NR)
  • Styrene Butadiene (SBR)
  • Ethylene Propylene (EPDM)
  • Chloroprene / Neoprene (CR)
  • Nitrile (NBR)
  • Polyacrylate (ACM)
  • Acrylic Ester / Ethylene (AEM)


  • Mounts
  • Pads
  • Snubbers
  • Stoppers
  • Diaphragms
  • Boots