Grade 380 Rubber for Polyurethane Resins 1kg
SYL-1531

Clear
SKU: SYL-1531 Category:

Description

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).
For casting in Clear PU please use Grade 400.

Pale blue (when mixed) Comes complete with hardener – mix-ratio is 5 parts of hardener to 100 parts of rubber.

  • 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 •