Poly-Optic® 1740 Clear Urethane Resin

SKU:
1740U16

Poly-Optic® 1740 Clear Urethane Resin is a two-part, mercury-free resin that cures (RTV) to a water-clear, Shore D70 plastic. This product has a simple 1A:1B mix ratio by weight or volume, ~14-minute pot life, and ~1 hour demold time at room temperature. For a similar product with higher Shore hardness, consider Poly-Optic® 1730 Clear Urethane Resin or Poly-Optic® 1730X Clear Urethane Resin (faster version of 1730).

Vacuum and/or pressure casting techniques are recommended for this product. Cure inhibition can occur when casting this resin in tin-cured silicone rubber molds – use a platinum-cured silicone rubber mold if working with silicones.

FOR INDUSTRIAL/PROFESSIONAL USE ONLY. 

$260.40
Current Stock:
Looking for larger sizes (e.g., drum kits)?
Please contact Customer Service at 800-858-5990 or sales@polytek.com

Technical Specifications

Mix Ratio by Weight:
1A:1B
Mix Ratio by Volume:
1A:1B
Shore Hardness:
D70
Pot Life:
14 min.
Demold Time:
1 hr.
Cured Color:
Water-Clear
Mixed Viscosity:
400 cP
Specific Gravity:
1.03
Specific Volume:
28.5 in³/lb
Max. Exotherm:
210°F
Notes:
Demold time varies with thickness of casting and the amount of Poly-Optic Part X Accelerator added. The thinner the casting, the longer the demold time. Shrinkage in polyurethane resins is caused by gelling while hot then cooling.

More Information

Material Calculator

Technical Bulletin

Safety Data Sheet - Part A

Safety Data Sheet - Part B

Kit Components
Poly-Optic® 1740 Components
4-lb kit includes: 2 lb of Poly-Optic® 1740 Part A (~1 quart)
2 lb of Poly-Optic® 1740 Part B (~1 quart)
16-lb kit includes: 8 lb of Poly-Optic® 1740 Part A (~1 gallon)
8 lb of Poly-Optic® 1740 Part B (~1 gallon)
80-lb kit includes: 40 lb of Poly-Optic® 1740 Part A (~5 gallons)
40 lb of Poly-Optic® 1740 Part B (~5 gallons)

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