High quality NBR rubber round washers/gaskets for seal

Custom NBR rubber round washers provide annular sealing components for a defined joint. Their dimensions should match the contact area and closing gap, with the compound selected for the actual operating exposure. When replacing a washer, the condition of the removed part can help identify issues in the surrounding seat.

Look for a contact band that is uneven, interrupted, or displaced toward one edge. Such a pattern may indicate that the washer shifted during assembly or that the mating surfaces do not meet consistently. The new part should sit centered and flat before the joint is closed. Its edges need support so the rubber is not forced into an adjoining gap.

Clean the sealing faces and correct sharp defects before fitting. Preserve the specified NBR configuration and thickness rather than adding another washer to cover an unexplained leak. The complete joint should be assessed under its intended conditions. Repeated damage in the same location deserves attention to the mating hardware as well as the replacement rubber.

Material options

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

Hardness selection

Rubber: 30–90 Shore A. Their dimensions should match the contact area and closing gap, with the compound selected for the actual operating exposure.

Custom dimensions

Look for a contact band that is uneven, interrupted, or displaced toward one edge.

Fit & assembly

The new part should sit centered and flat before the joint is closed.

Use & inspection

Repeated damage in the same location deserves attention to the mating hardware as well as the replacement rubber.

Photos illustrate structure or material only. Custom NBR rubber round washers provide annular sealing components for a defined joint. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.