Custom silicone rubber seal gasket flat fender washer

A flat fender washer has a broad surrounding area relative to its center opening. In this custom silicone rubber seal form, the outer diameter and section should follow the surface that supports the washer. A large visible face only contributes usefully where the mating parts contact it as intended.

Check the central fastener or locating feature and the clearance around it. The opening needs to match without being forced over an oversized section. At the outside edge, make sure the washer does not bridge an unsupported recess or interfere with another component.

Select the material for the joint's conditions and the thickness for its designed compression. A rubber washer should not be treated as a substitute for structural hardware required by the assembly. Install it flat and use the intended fastening arrangement to keep loading controlled. During maintenance, inspect the area near the center opening for cuts and the outer region for distortion. Match both diameters and the section when replacing it rather than choosing solely by the fastener size.

Material options

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

Hardness selection

Silicone: 20–80 Shore A. Select the material for the joint's conditions and the thickness for its designed compression.

Custom dimensions

Check the central fastener or locating feature and the clearance around it.

Fit & assembly

Install it flat and use the intended fastening arrangement to keep loading controlled.

Use & inspection

During maintenance, inspect the area near the center opening for cuts and the outer region for distortion.

Photos illustrate structure or material only. A flat fender washer has a broad surrounding area relative to its center opening. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.