Capabilities

*We can meet or develop your Military or ASTM specifications. Contact us and we will provide the correct elastomer for your specification.



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Injection Molding

Injection Molding is when uncured rubber strip is fed through a screw barrel into a heated, closed mold (the mold is specific to the part and may have multiple cavities). The screw pushes a measured amount rubber through a system of gates and runners into the cavities. The pressure of the press holds the mold closed. The rubber is held in the heated cavity for a specific amount of time to properly cure the rubber into its final shape.

Advantages

  • Reduces piece price cost on mid to high volume components
  • Good for high precision components
  • Can accommodate over-mold or rubber bonded to metal or other material parts
  • Flexibility for types of material to use
  • Short cycle times
  • Disadvantages

  • Higher initial tooling cost

  • Examples of Injection Molded Parts:

    Bellow
    Nozzle


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    Compression Molding

    Compression molding is when a preform (specific size and weight of uncured rubber) is placed into the open mold. The heated mold (specific to the part) is then closed using hydraulic pressure. The rubber is held in the heated cavity for a specific amount of time to properly cure the rubber into its final shape.

    Advantages

  • Lower initial tooling cost
  • Best for low volume production
  • Good for large components
  • Can accomodate over-mold or rubber bonded to metal or other meterial parts
  • Disadvantages

  • Labor intensive compared to injection molding
  • More wasted material than injection molding
  • Higher cycle time

  • Examples of Compression Molded Parts:

    Seal
    Cable Cleat


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    Transfer Molding

    Transfer Molding is molding is when a preform (specific size and weight of uncured rubber) is placed into the transfer pot. The ram is then closed pushing the uncured rubber through the runner and gate system into the part cavity. The pressure of the press holds the mold closed. The rubber is held in the heated cavity for a specific amount of time to properly cure the rubber into its final shape.

    Advantages

  • Good for high precision applications
  • Can accommodate over-mold or rubber bonded to metal or other material parts
  • Good for colored compounds of rubber
  • Disadvantages

  • Labor intensive compared to injection molding
  • Higher tooling costs than compression tools

  • Example of a Transfer Molded Part:



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    Extrusion

    Extruded Rubber Parts are manufactured by feeding uncured rubber into the extruder which then forces the material through a die (specific to the part) that creates the profile of the shape. The part is then cured to create the finished material. This process is typical for strip gasket, cord, tubing or other profile components.


    Example of a Transfer Molded Part:

    Mold
    Finished Product


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