Customized waterproof NBR rubber washer/rubber sealing gaskets

An NBR rubber washer needs to suit the actual medium at the joint as well as its mechanical fit. The material family is relevant to selection, but it does not establish compatibility with every liquid, cleaning agent, or temperature condition. Define those exposures for the finished connection before settling the formulation.

Choose the ring dimensions around the seating faces and fastening arrangement. The center opening should preserve the intended passage, and the outer edge needs sufficient support as the washer compresses. A narrow hard contact or unsupported gap can damage the ring even when its material is otherwise appropriate.

Evaluate waterproof performance in the completed joint under its specified conditions. Inspect the washer after removal for swelling, cuts, extrusion, or an uneven compression pattern. Different damage can point to different causes, so consider material exposure and assembly geometry separately. Replacing the ring with another identified only as NBR may reproduce a formulation mismatch, while changing material will not correct a sharp or poorly supported seating face.

Material options

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

Hardness selection

Rubber: 30–90 Shore A. The center opening should preserve the intended passage, and the outer edge needs sufficient support as the washer compresses.

Custom dimensions

Choose the ring dimensions around the seating faces and fastening arrangement.

Fit & assembly

An NBR rubber washer needs to suit the actual medium at the joint as well as its mechanical fit.

Use & inspection

Inspect the washer after removal for swelling, cuts, extrusion, or an uneven compression pattern.

Photos illustrate structure or material only. The center opening should preserve the intended passage, and the outer edge needs sufficient support as the washer compresses. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.