Poly 74-40 Liquid Rubber is a two-part, liquid polyurethane system that cures (RTV) to a Shore A40 rubber. This is a pourable rubber, but it can be easily thickened with PolyFiber II Thickener for brush-on application.
WARNING: This product can expose you to chemicals including Toluene diisocyanate (TDI), which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.
Technical Specifications
Mix Ratio by Weight: 2A:1B
Shore Hardness: A40
Pour Time: 20 min.
Demold Time: 16 hr.
Cured Color: Varies
Mixed Viscosity: 3,400 cP
Specific Volume: 27.5 in³/lb
Specific Gravity: 1.01
Elongation: 400 %
Tensile Strength: 349 psi
Die C Tear Strength: 95 pli
Notes: Shake or Stir Part B before use. The color of polyurethane Part Bs may change in color from batch to batch or may darken with age, but product performance is not affected.
Technical Bulletin
Safety Data Sheet - Part A
Safety Data Sheet - Part B
Kit Components
| Poly 74-40 |
Components |
| 24-lb kit includes: |
16 lb of Poly 74-Series Part A (~2 gallons)
8 lb of Poly 74-40 Part B (~1 gallon) |
| 120-lb kit includes: |
80 lb of Poly 74-Series Part A (~10 gallons)
40 lb of Poly 74-40 Part B (~5 gallons) |
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