Important! Prop Foam 4 has a new, improved formula for better skinning properties!

The new formula has a white part B. The new mix ratio is 37A:100B by weight.

Prop Foam 4 is a 37A:100B mix (by weight) polyurethane self-skinning, low density flexible foam that has a free-rise density of 4 lb per cubic foot. Prop Foam 4 flexible foam is excellent for large body props, padding, and back-filling large, flexible props and parts.

Prop Foams work best when cast into warm Tin cure or Platinum silicone molds. Prop Foam 4 is "self skinning," but PT Flex Casting Rubbers such as PT Flex 20 are ideal for sloshing into molds to create skins for foam props.

Prop Foam cures white but can be pigmented with PolyPig Pigments. (See urethane additives)

Mixing Ratio: 37A:100B by Weight
Cream Time: 45 Seconds
Demold Time: 30 Minutes
Ideal working temperature: 75ºF - 85ºF

 Technical Data:  Data Sheet  -  MSDS  Part A - Part B