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Polytek

Poly 74-30 Series

Poly 74-30 Series

$75.00 USD
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Poly 74-30 Liquid Rubber is a two-part, liquid polyurethane system that cures (RTV) to an amber (color varies), Shore A30 rubber. This is a pourable rubber, but it can be easily thickened with PolyFiber II Thickener for brush-on application. For a transparent, amber version of this rubber, consider Poly 74-30 Clear Liquid Rubber. For a high-tear version of this product, consider Poly 74-30 HT Liquid Rubber.

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:1A:1B
Shore Hardness:A30
Pour Time:25-30 min.
Demold Time:16 hr.
Cured Color:Amber, Varies
Mixed Viscosity:2,000 cP
Specific Volume:27.5 in³/lb
Specific Gravity:1.01
Elongation:506 %
Tensile Strength:281 psi
Die C Tear Strength:62 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 74-30 Components
4-lb kit includes: 2 lb of Poly 74-Series Part A (~1 quart)
2 lb of Poly 74-30 Part B (~1 quart)
16-lb kit includes: 8 lb of Poly 74-Series Part A (~1 gallon)
8 lb of Poly 74-30 Part B (~1 gallon)
80-lb kit includes: 40 lb of Poly 74-Series Part A (~5 gallons)
40 lb of Poly 74-30 Part B (~5 gallons)

 

Poly 74-30 Clear Liquid Rubber is a two-part, liquid polyurethane system that cures (RTV) to a transparent amber, Shore A30 rubber. This is the transparent version of Poly 74-30 Liquid Rubber. This product is useful for molds where clarity is needed to see casting material fill the cavity. This liquid polyurethane rubber can also be used for casting clear amber or color-cast flexible art objects and décor. Poly 74-30 Clear 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. 

FOR INDUSTRIAL/PROFESSIONAL USE ONLY. 

Technical Specifications

Mix Ratio by Weight:1A:1B
Shore Hardness:A30
Pour Time:25-30 min.
Demold Time:16 hr.
Cured Color:Amber, Transparent
Mixed Viscosity:2,000 cP
Specific Volume:27.5 in³/lb
Specific Gravity:1.01
Elongation:507 %
Tensile Strength:281 psi
Die C Tear Strength:62 pli
Notes: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 74-30 Clear Components
4-lb kit includes: 2 lb of Poly 74-Series Part A (~5 gallons)
2 lb of Poly 74-30 Clear Part B (~5 gallons)
16-lb kit includes: 8 lb of Poly 74-Series Part A (~1 gallon)
8 lb of Poly 74-30 Clear Part B (~1 gallon)
80-lb kit includes: 40 lb of Poly 74-Series Part A (~5 gallons)
40 lb of Poly 74-30 Clear Part B (~5 gallons)
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