A Pressure Inverting Pedestal is designed to convert a loaded U-cup into a bi-directional seal for high pressure applications. The LIP profile is rectangular in shape which makes it compatible with both Quad loaded U-cups and O-ring loaded U-cups. The PIP ring design is only functional in conjunction with a O-ring loaded U-cup. For gland dimension and design information please consult Hi-Tech Seals' sales staff.
PTFE Back-up rings can function as a LIP ring for beveled loaded U-cups in low to medium pressure applications. Consult a Hi-Tech Seals' technical sales representative before substituting.