Poly 75-80 Liquid Rubber is a two-part, liquid polyurethane system that cures (RTV) to a yellow, Shore A80 rubber. This is a pourable rubber, but it can be easily thickened with PolyFiber II Thickener for brush-on application.

CALCULATION:
Determine volume of the
containment area:
(L” x W” x H”) = ________ in³
Determine volume of the model:
(L” x W” x H”) = ________ in³
Subtract the volume of the
model from the volume of the
containment area:
_________in³ - ________in³ =
____________in³
Divide the result by 27 in³/lb.
(the specific volume of most Poly Liquid Rubber) to determine
how many pounds of Poly
Liquid Rubber are needed:
_________in³ ÷ 27 in³/lb. =
_________ lb. of Poly rubber

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