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  • The post process requirements are specific to the material used.  Rigid plastic compression molded parts can be finish machined, etched and painted.  Most softer silicone material are neither finish machinable nor paintable, but soft urethane can be painted.

    Plastics

    • Finish CNC
    • Etched
    • Painted
    • Drilled

    Elastomers not including silicone

    • Painting

Post Processes

The post process requirements are specific to the material used.  Rigid plastic compression molded parts can be finish machined, etched and painted.  Most softer silicone material are neither finish machinable nor paintable, but soft urethane can be painted.

Plastics

  • Finish CNC
  • Etched
  • Painted
  • Drilled

Elastomers not including silicone

  • Painting

Technical Info

Available compression molding capabilities include flash, positive and semi-positive

Material range includes thermosets, thermoplastics, elastomers, and natural rubbers

Part tolerances for compression molded rubber parts range from + 0.004” – 0.090”, varying by the length and thickness of the part

Corner radii should be designed greater than 0.050” although 0.010” can be achieved with the correct design

We recommend avoiding any undercuts

Circularity tolerances range from 0.006” – 0.008”

The minimum diameter of a hole should be 0.050”, and the height of a hole should not be more than twice its diameter

Minimum wall thickness should be 0.060” – .118”, depending on the material being used

Materials

  • Silicone (varying durometers)
  • Optical-Grade Silicone
  • Medical-Grade Silicone
  • Fluorosilicone
  • Urethane
  • High-density Polyethylene (HDPE)
  • Epoxy
  • Melamine
  • Polytetrafluoroethylene (PTFE)
  • Polyphenylene Sulfide (PPS)
  • Neoprene
  • Butyl
  • Polypropylene
  • Polystyrene
  • UHMWPE
  • EPDM
  • Viton
  • Nitrile
  • Nylon
  • Butyl
  • Phenolics
  • PEEK
  • Nylon