Every wheel cylinder is factory tested with a pressure of 40 psi of dry air to the fully assembled cylinder. The test checks for porosity, leaks, presence, position and quality of cups, surface finish of bores, and bleeder seal. All castings meet S.A.E. J431 Standards, and bleeder screws are case hardened for long, reliable life. Brake cups meet S.A.E. Standard J1601. Durable dust boots are made from premium EPDM rubber, meeting S.A.E. Standar J1604. Like other Coni-Seal parts, all wheel cylinders meet high standards of form, fit and function.
