Polyurethane Casting System A60 Flexible Set gives a nice flexible rubber like cast with high tear strength.
Polytek Poly PT Flex 60 Liquid Casting Rubber
Mix Ratio - 1:1 by weight and volume Cure Time – ~7 minutes Demold Time – 2-3 hours
Simple Resin Enduro Flex - 2 Part Liquid Polyurethane Casting Rubber - Flexible, Durable Casting Material - 80 Shore A Hardness - Formulated for
Flexible High Impact Cast Urethane (Shore 30 D) – Pollinator® Kit
Polyurethane Casting Resin Flexible Kit A60 - /en
Flex 60
Semi Flexible Casting Polyurethane Resin (Shore A 90 ,A 60 mixing
Polyurethane / PU - /en
F160 Flexible Polyurethane Resin
Specialty Resin & Chemical Model-Pro (1-Gallon Kit
Platinum Cure Silicone Rubber Semi-Rigid Mold
Envirolastomer™ ELA1060 - Environmentally Friendly