Factory custom made rubber washer for sealing

A rubber washer for sealing provides a custom circular contact layer between mating parts. The central opening and outer profile should match the receiving assembly, while the thickness suits the intended compression. The washer needs to stay centered as the parts are brought together.

Check any locating shoulder or recess that helps position the rubber. Without suitable alignment, a washer can partly overlap the opening or shift toward one fastener. The mating surfaces need enough supported area so the rubber does not deform into an unintended gap.

Place the washer flat on clean surfaces and inspect its position during fastening. Avoid stretching it to reach a feature or applying extra force to make an incorrect thickness fit. Evaluate the complete joint under its intended operating conditions. During maintenance, examine both the rubber and receiving surfaces for damage, using a replacement that preserves the designed section and contact area rather than concealing a worn seat.

Material options

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

Hardness selection

Rubber: 30–90 Shore A. Avoid stretching it to reach a feature or applying extra force to make an incorrect thickness fit.

Custom dimensions

The central opening and outer profile should match the receiving assembly, while the thickness suits the intended compression.

Fit & assembly

Place the washer flat on clean surfaces and inspect its position during fastening.

Use & inspection

During maintenance, examine both the rubber and receiving surfaces for damage, using a replacement that preserves the designed section and contact area rather than concealing a worn seat.

Photos illustrate structure or material only. The central opening and outer profile should match the receiving assembly, while the thickness suits the intended compression. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.