Die Cut adhesive Silicone Gasket Round Flat O Ring

An adhesive Silicone Gasket in a flat ring format follows a defined inner and outer outline. Die cutting produces the planar shape, while the selected sheet thickness and backing contribute to the assembled height. The ring should be handled so its narrow sections are not stretched before they reach the bonding surface.

Compare the cut opening with the passage or feature it surrounds, and check that the outer edge remains within the available sealing land. A flat ring should be selected around that planar joint; its geometry differs from a round-section O-ring intended to sit in a shaped groove.

Peel the liner gradually and support the rubber as it is placed. If the ring is flexible or narrow, align it from a clear reference point instead of pulling it across the surface. Press it down using the method required for the selected adhesive, then bring the opposing part into position without dragging the ring. Inspect the inner edge for folds that could remain hidden once the joint is closed.

Material options

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

Hardness selection

Silicone: 20–80 Shore A. Press it down using the method required for the selected adhesive, then bring the opposing part into position without dragging the ring.

Custom dimensions

A flat ring should be selected around that planar joint; its geometry differs from a round-section O-ring intended to sit in a shaped groove.

Fit & assembly

Compare the cut opening with the passage or feature it surrounds, and check that the outer edge remains within the available sealing land.

Use & inspection

Inspect the inner edge for folds that could remain hidden once the joint is closed.

Photos illustrate structure or material only. Die cutting produces the planar shape, while the selected sheet thickness and backing contribute to the assembled height. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.