Molded water proof oil proof sealing gasket o-ring

A sealing gasket O-ring closes a suitably designed joint through contact between its rubber section and the mating surfaces. For water or oil exposure, the selected compound must suit the actual fluid and service conditions. A general water-proof or oil-proof label does not establish compatibility with every medium or pressure.

Match the ring's internal diameter and cross-section to the receiving groove. The available space needs to allow the intended compression without pinching the rubber or leaving it free to move out of position. A damaged groove edge can compromise an otherwise suitable ring during assembly.

Fit the O-ring without twisting it and keep particles away from its contact surfaces. Evaluate the complete joint under its intended conditions rather than judging sealing performance from a dry hand fit. When dismantling, inspect both the ring and its seat. Replace a cut or permanently distorted ring, and address damage to the mating surface before fitting another component into the same joint.

Material options

Rubber. Custom formulation and color for the intended contact conditions.

Hardness selection

Rubber: 30–90 Shore A. The available space needs to allow the intended compression without pinching the rubber or leaving it free to move out of position.

Custom dimensions

Match the ring's internal diameter and cross-section to the receiving groove.

Fit & assembly

Evaluate the complete joint under its intended conditions rather than judging sealing performance from a dry hand fit.

Use & inspection

Replace a cut or permanently distorted ring, and address damage to the mating surface before fitting another component into the same joint.

Photos illustrate structure or material only. A sealing gasket O-ring closes a suitably designed joint through contact between its rubber section and the mating surfaces. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.