380 Silicone Rubber

Code: SYL-1531

Size

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Description

Stiffer than 370 ( Giving better dimensional stability ) but softer than grade 390.

Grade 380 rubber is a high tear strength rubber for the casting of polyurethane resins.
Its high tear strength permits castings to be made with larger than normal under cuts. When cured, it is stiffer than grade 370 (giving it better dimensional stability) but softer than grade 390 (making it better for deep undercuts).

Pale blue (when mixed) Comes complete with hardener – mix-ratio is 5 parts of hardener to 100 parts of rubber. (For casting in Clear PU please use Grade 400).

Details:

  • Pot Life: 45-120 minutes
  • De-mould: 8 hours •
  • Mixed viscosity: 16,500 mPas
  • Shore A hardness: 18° •
  • Elongation at break: 539% •
  • Tensile strength: 3.11 MPa •
  • Tear strength: 23.49 kN/m •
  • Young’s modulus: 1.18 MPa •
  • Linear shrinkage: 0.39% • Min
  • service temperature: -50°C • Max
  • service temperature: 200°C •

Key Benefits: •

  • Good dimensional stability •
  • High Tear Strength •
  • Easy degassing •
  • Chemically resistant •

Additional information

Weight 1.5 kg
Dimensions 18 x 18 x 18 cm

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