Molded high quality rubber sealing ring/round washer thick

A thick rubber sealing ring occupies part of the space between mating components. Its custom section should be chosen from the intended closed position, with the inner and outer dimensions following the supported contact area. Additional thickness is useful only when the assembly is designed to accommodate it.

Check the clearance after the mating parts reach their locating surfaces. The rubber needs room for the intended compression without preventing fasteners or other features from engaging correctly. A broad ring also needs support across its width so that material is not driven into an unwanted gap.

Select the compound for the substances and temperature at the joint. Install the ring without stretching it around its locating feature, then check its perimeter before closure. Use the assembly's specified closing method to keep compression controlled. During replacement, compare the required section with the original design rather than copying a used ring that has permanently flattened. Keep replacement components identified by thickness as well as diameter so that visually similar variants remain distinct.

Material options

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

Hardness selection

Rubber: 30–90 Shore A. Use the assembly's specified closing method to keep compression controlled.

Custom dimensions

Check the clearance after the mating parts reach their locating surfaces.

Fit & assembly

Install the ring without stretching it around its locating feature, then check its perimeter before closure.

Use & inspection

During replacement, compare the required section with the original design rather than copying a used ring that has permanently flattened.

Photos illustrate structure or material only. A broad ring also needs support across its width so that material is not driven into an unwanted gap. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.