Low Dielectric Constant, Low Loss Structural Foam

PPG C-STOCK^® RH is a series of rigid Polymethacrylimide foams which will withstand temperatures to 350ºF. PPG C-STOCK RH has a high compression and shear strength and a very low dielectric constant and low loss dissipation factor. It is easily machined to close tolerances.

It is useful as a low density, high temperature structural member, as a thermal barrier material and as an RF window material.

PPG C-STOCK RH is available in the standard sheet size and thickness listed above and also can be supplied in other sizes, thickness or per customer specified configurations.