Good performance oval round rubber gasket

A round rubber gasket follows a circular contact path, while an oval configuration needs dimensions in both its long and short directions. Choose the actual outline required by the mating parts rather than stretching a circular ring to resemble an elongated opening.

The gasket can be cut or molded around the required shape and section. Select the compound according to the joint exposure, and include the available sealing width at curved ends as well as along straighter areas. An outline that matches the opening visually may still leave insufficient support beneath part of the rubber.

Lay the gasket on its intended face in a relaxed condition before assembling the joint. Check that its edges remain within the sealing land and that no section has been pulled narrower to reach a corner or end. After disassembly, inspect the contact imprint across the perimeter. Differences between the ends and sides can help identify a geometry or seating issue before a replacement is fitted to the same joint.

Material options

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

Hardness selection

Rubber: 30–90 Shore A. Choose the actual outline required by the mating parts rather than stretching a circular ring to resemble an elongated opening.

Custom dimensions

An outline that matches the opening visually may still leave insufficient support beneath part of the rubber.

Fit & assembly

Lay the gasket on its intended face in a relaxed condition before assembling the joint.

Use & inspection

Differences between the ends and sides can help identify a geometry or seating issue before a replacement is fitted to the same joint.

Photos illustrate structure or material only. An outline that matches the opening visually may still leave insufficient support beneath part of the rubber. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.