Machining

To preclude premature wear and seal failure, the metal surfaces which contact O-rings during installation and system operation must be properly prepared. Preparation consists of appropriate selection of materials, as well as machining for optimum surface finish.

To prevent O-ring extrusion or nibbling, rectangular, straight-sided, glandular grooves are best. For pressures up to 1,500 psi, 5 degree sloping sides are acceptable and easier to machine. Break all sharp corners by at least 0.005" to avoid unnecessary cutting or nicking of O-rings during assembly and operation.