High quality waterproof rubber gasket/silicone thin washer

A silicone thin washer fits an interface where the available section height is limited. Custom sizing allows the inner and outer boundaries to match the mating components. The washer needs an appropriately supported seat so that it stays flat as the joint closes.

Handle a thin section with care during positioning. Sliding it across a rough surface or pulling one edge into place can create a wrinkle that remains hidden beneath the mating part. Align the center opening first, then check the rest of the contact region before closure.

Choose the silicone formulation for the temperature and substances at the joint. Water-related service should be evaluated with the complete assembly, including the compression applied to the washer. Extra tightening is not a substitute for the correct section thickness or an undamaged mating face. During replacement, remove deposits from the seat and inspect the old washer for pinched regions. Keep new washers flat and separated from sharp hardware until they are installed, preserving their edges and original shape.

Material options

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

Hardness selection

Silicone: 20–80 Shore A. Assess firmness with the silicone sealing layer laid smoothly in its seat; a concealed wrinkle changes local compression independently of grade.

Custom dimensions

A silicone thin washer fits an interface where the available section height is limited.

Fit & assembly

Align the center opening first, then check the rest of the contact region before closure.

Use & inspection

During replacement, remove deposits from the seat and inspect the old washer for pinched regions.

Photos illustrate structure or material only. The washer needs an appropriately supported seat so that it stays flat as the joint closes. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.