High quality various material FKM NBR o-ring/seal o ring

An NBR o-ring should remain identified by its selected compound when used beside Viton or other seal materials. The same diameter can be available in several formulations, but those options need to be matched to their actual service conditions. A ring selected only because it fits the groove may change the intended response to the medium or temperature.

Check the section size, installed stretch, and support provided by the groove. Include movement and pressure direction where relevant. The fitting route should let the rubber reach its seat without damage from threads or sharp shoulders.

Keep replacement versions separated during maintenance and inspect the old ring before discarding it. Cuts or extrusion can point to an assembly feature that needs correction, while a changed surface or shape may prompt a review of exposure. Install the specified ring untwisted on clean surfaces and assess the complete joint under its operating conditions. Do not use a material substitution as a general remedy for an unresolved geometry problem.

Material options

NBR / FKM. Custom formulation and color for the intended contact conditions.

Hardness selection

Rubber: 30–90 Shore A. A ring selected only because it fits the groove may change the intended response to the medium or temperature.

Custom dimensions

Check the section size, installed stretch, and support provided by the groove.

Fit & assembly

Cuts or extrusion can point to an assembly feature that needs correction, while a changed surface or shape may prompt a review of exposure.

Use & inspection

Keep replacement versions separated during maintenance and inspect the old ring before discarding it.

Photos illustrate structure or material only. An NBR o-ring should remain identified by its selected compound when used beside Viton or other seal materials. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.