Industrial various water-proof silicone rubber round washer/rings

A silicone rubber round washer can provide a compliant ring between matching faces. For a water-sealing duty, the contact area must follow the intended joint geometry rather than merely surround the opening. The washer's bore, outer diameter and thickness all influence that relationship.

Check the supporting faces for steps or gaps that would leave part of the rubber unsupported. The selected silicone formulation should suit the actual water exposure, temperature and cleaning conditions. A water-proof description does not establish a pressure or ingress rating for every assembly using the washer.

Place the ring without stretching it around a mismatched feature and keep debris off the contact surfaces. Evaluate the completed joint under the intended conditions. During maintenance, inspect for an uneven compressed profile and damage at the inner edge. A replacement should restore the planned contact width and thickness, since a ring with a similar outside diameter can still produce a different sealing arrangement if its bore or section differs.

Material options

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

Hardness selection

Silicone: 20–80 Shore A. A water-proof description does not establish a pressure or ingress rating for every assembly using the washer.

Custom dimensions

The washer's bore, outer diameter and thickness all influence that relationship.

Fit & assembly

Check the supporting faces for steps or gaps that would leave part of the rubber unsupported.

Use & inspection

During maintenance, inspect for an uneven compressed profile and damage at the inner edge.

Photos illustrate structure or material only. For a water-sealing duty, the contact area must follow the intended joint geometry rather than merely surround the opening. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.