Custom waterproof silicone rubber o type sealing ring

A silicone rubber o type sealing ring provides a continuous circular contact element for a matching joint. Custom size and hardness options allow the ring to be selected around the mating parts. Its effectiveness depends on how the groove and closure establish compression around the full circumference.

Measure the groove and ring as a system. Inside diameter, section size, groove depth, and available width each affect the installed shape. An oversized section cannot be corrected simply by applying more closing force, and excessive stretching can change the section that remains available for sealing.

Install the ring cleanly and check its position before bringing the mating parts together. Look for a twist or a portion lifted out of the groove, particularly where visibility is limited. Close the joint in its intended alignment and assess it under the actual water exposure or other service conditions. During maintenance, remove deposits without scratching the sealing surfaces. A replacement should match the specified dimensions and compound, not only the apparent diameter of the old ring.

Material options

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

Hardness selection

Silicone: 20–80 Shore A. An oversized section cannot be corrected simply by applying more closing force, and excessive stretching can change the section that remains available for sealing.

Custom dimensions

Inside diameter, section size, groove depth, and available width each affect the installed shape.

Fit & assembly

Install the ring cleanly and check its position before bringing the mating parts together.

Use & inspection

During maintenance, remove deposits without scratching the sealing surfaces.

Photos illustrate structure or material only. Inside diameter, section size, groove depth, and available width each affect the installed shape. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.