Silicone rubber sealing washer/shock absorbing washer

A silicone rubber sealing washer provides a compliant ring that can be selected for a joint requiring both sealing contact and cushioning. Its material and geometry should work with the mating faces and the way force is applied. The washer's usable behavior depends on the installed compression, not simply on a soft feel when loose.

Identify whether the joint remains steadily loaded or sees changes in force. The rubber needs enough supported area to maintain its contact without being driven into an unsupported gap. Check inner and outer diameters together with the intended working thickness.

Choose the formulation for the actual operating environment and assess both mechanical response and sealing in the completed assembly. Keep the washer centered as the mating parts meet, avoiding a fold or local pinch. During inspection, look for permanent deformation concentrated at one side. That may indicate uneven support or an off-center load that should be corrected before replacement. Use the specified section and compound when rebuilding the joint rather than increasing thickness to compensate for a condition the original assembly was not designed to accommodate.

Material options

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

Hardness selection

Silicone: 20–80 Shore A. The washer's usable behavior depends on the installed compression, not simply on a soft feel when loose.

Custom dimensions

Use the specified section and compound when rebuilding the joint rather than increasing thickness to compensate for a condition the original assembly was not designed to accommodate.

Fit & assembly

Choose the formulation for the actual operating environment and assess both mechanical response and sealing in the completed assembly.

Use & inspection

The rubber needs enough supported area to maintain its contact without being driven into an unsupported gap.

Photos illustrate structure or material only. A silicone rubber sealing washer provides a compliant ring that can be selected for a joint requiring both sealing contact and cushioning. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.