Customized flexible silicone gaskets/silicone rubber O-ring

A silicone rubber O-ring should reach its groove without being rolled into a twist around the circumference. The flexible section can pass over an assembly feature yet remain distorted afterward, so the route to the seat needs attention alongside the final dimensions. Select the ring and any gasket alternatives for the actual joint format.

Check the groove diameter, section space, and support under pressure where relevant. Choose the silicone formulation for the medium, temperature, and cleaning exposure. Protect the surface from threads or sharp shoulders during fitting.

Position the ring evenly and inspect before bringing the mating part into place. Use only compatible assembly aids where needed. During service, look for a spiraled contact pattern or cuts that suggest installation damage, and compare them with the route the ring traveled. Correct that route before replacement rather than expecting another flexible ring to remain undamaged through the same interfering feature. Preserve the intended section so the groove controls contact as designed.

Material options

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

Hardness selection

Silicone: 20–80 Shore A. The flexible section can pass over an assembly feature yet remain distorted afterward, so the route to the seat needs attention alongside the final dimensions.

Custom dimensions

Check the groove diameter, section space, and support under pressure where relevant.

Fit & assembly

Position the ring evenly and inspect before bringing the mating part into place.

Use & inspection

During service, look for a spiraled contact pattern or cuts that suggest installation damage, and compare them with the route the ring traveled.

Photos illustrate structure or material only. A silicone rubber O-ring should reach its groove without being rolled into a twist around the circumference. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.