Poly 74-20 Liquid Rubber
Poly 74-20 Liquid Rubber is a two-part, liquid polyurethane system that cures (RTV) to a yellow, Shore A20 rubber. This is the softest rubber in the Poly 74-Series line of polyurethane mold rubbers. Poly 74-20 is a pourable rubber, but it can be easily thickened with PolyFiber II Thickener for brush-on application.
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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.
FOR INDUSTRIAL/PROFESSIONAL USE ONLY.
Technical Specifications
- Mix Ratio by Weight:
- 1A:2B
- Shore Hardness:
- A20
- Pour Time:
- 20 min.
- Demold Time:
- 16 hr.
- Cured Color:
- Yellow
- Mixed Viscosity:
- 800 cP
- Specific Volume:
- 27.5 in³/lb
- Specific Gravity:
- 1.01
- Elongation:
- 1,060 %
- Tensile Strength:
- 217 psi
- Die C Tear Strength:
- 43 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.
More Information
Poly 74-20 | Components |
---|---|
6-lb kit includes: | 2 lb of Poly 74-Series Part A (~1 quart) 4 lb of Poly 74-20 Part B (~2 quarts) |
24-lb kit includes: | 8 lb of Poly 74-Series Part A (~1 gallon) 16 lb of Poly 74-20 Part B (~2 gallon) |
120-lb kit includes: | 40 lb of Poly 74-Series Part A (~5 gallons) 80 lb of Poly 74-20 Part B (~10 gallons) |