Nitrile rubber rings Customized non-standard seals

Nitrile rubber rings can be customized for sealing locations that do not follow a standard ring size. The opening, cross section and seated shape should be developed around the mating parts, since a used ring may have stretched or taken a permanent set. Material and dimensions need to reproduce the intended joint rather than the distortion of an old seal.

Measure the seating feature and examine the faces that contact the ring. Note whether the ring is held in a groove or compressed between flat surfaces, because those arrangements support the rubber differently. Custom color and hardness options are available for the finished construction. Fit the ring without twists and ensure that it remains located while the joint closes. During inspection, look for a flattened region or damage confined to one portion of the circumference. That pattern can reveal a local seating issue which should be corrected before a replacement is installed. Keep the chosen nitrile compound matched to the actual fluid and temperature conditions of the joint.

Material options

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

Hardness selection

Rubber: 30–90 Shore A. The opening, cross section and seated shape should be developed around the mating parts, since a used ring may have stretched or taken a permanent set.

Custom dimensions

Nitrile rubber rings can be customized for sealing locations that do not follow a standard ring size.

Fit & assembly

Fit the ring without twists and ensure that it remains located while the joint closes.

Use & inspection

During inspection, look for a flattened region or damage confined to one portion of the circumference.

Photos illustrate structure or material only. Material and dimensions need to reproduce the intended joint rather than the distortion of an old seal. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.