Custom molded silicone rubber flat rings silicone gaskets

Silicone rubber flat rings provide a circular rubber layer with a flat cross section. The custom inside diameter, outside diameter, and thickness can be matched to a gasket seat or adjoining faces. The ring's width needs suitable support so compression occurs across the intended contact area.

Check the mating parts for shoulders, grooves, or edges that limit the available space. A ring may have the correct outside diameter but still overlap an unsupported opening on its inner edge. Thickness also affects how far the joint can close and how the rubber deforms during fastening.

Choose the compound for the medium, temperature, and cleaning conditions of the assembly. Place the ring flat on a clean surface and keep it aligned as the parts come together. Avoid stretching it around an oversized feature or using excessive tightening to compensate for an unsuitable section. Inspect the finished joint under its intended conditions. During replacement, check the seating faces as well as the rubber, since damage or unevenness in the adjoining parts can affect the seal.

Material options

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

Hardness selection

Silicone: 20–80 Shore A. Avoid stretching it around an oversized feature or using excessive tightening to compensate for an unsuitable section.

Custom dimensions

The custom inside diameter, outside diameter, and thickness can be matched to a gasket seat or adjoining faces.

Fit & assembly

Place the ring flat on a clean surface and keep it aligned as the parts come together.

Use & inspection

During replacement, check the seating faces as well as the rubber, since damage or unevenness in the adjoining parts can affect the seal.

Photos illustrate structure or material only. The ring's width needs suitable support so compression occurs across the intended contact area. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.