Loeperm Foam ®is a low-cost gasketing material made from polyester urethane foam. Unlike most flexible foams, Loeperm ® has a high number of unbroken fine-cell "windows" or membranes to give it exceptional low air and vapor permeability not found in other flexible urethane foams.
Loeperm Foam ® is excellent for low-pressure gasketing in applications for light, dust, and vapor seals where higher priced materials are over-engineered, and it can be precision fabricated by Reilly Foam to your exact specifications. Also, Loeperm ® can be combined in different ways with any of several other substrates.