Factory price waterproof rubber o seal ring flat washer

A rubber o seal ring flat washer should sit on supported mating surfaces that define its working contact. The inner opening, outside boundary and thickness determine where closing force reaches the rubber. A flat ring can fold or extrude if its edge extends beyond the available sealing land.

Custom material, dimensions, hardness and color can match the joint. Define the intended water exposure and operating conditions, then evaluate the selected formulation and complete assembly for the required sealing result. An apparently compressed washer does not establish waterproofing by itself.

Clean both faces and the mating surfaces before installation. Position the ring without wrinkles and check that closing movement does not drag it out of place. During maintenance, inspect the contact imprint and visible perimeter for uneven compression. A repeated folded edge may indicate an unsupported region or closure alignment issue. Correct that condition before choosing a thicker washer, since additional rubber can increase distortion if the receiving space remains unsuitable.

Material options

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

Hardness selection

Rubber: 30–90 Shore A. Position the ring without wrinkles and check that closing movement does not drag it out of place.

Custom dimensions

The inner opening, outside boundary and thickness determine where closing force reaches the rubber.

Fit & assembly

A repeated folded edge may indicate an unsupported region or closure alignment issue.

Use & inspection

During maintenance, inspect the contact imprint and visible perimeter for uneven compression.

Photos illustrate structure or material only. A rubber o seal ring flat washer should sit on supported mating surfaces that define its working contact. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.