Bottle Rubber Seal Ring Oil Resistant Washers

A Bottle Rubber Seal Ring forms a flexible sealing band within a bottle closure. Its fit depends on the groove or seating face that holds it, and its material needs to suit the bottle contents. Oil resistance must be selected for the actual liquid and contact conditions rather than inferred from the ring's appearance.

Check how the closure moves while it compresses the ring. A turning lid may drag the rubber if the seating area does not retain it correctly. Align the ring without twists, and keep its section within the intended groove before closing the bottle. Custom dimensions, compound and color can be selected for that joint.

Evaluate the assembled closure using the intended contents, exposure duration and care method. Examine the ring after opening for a shifted position, a folded area or damage along one edge. If it has changed size or become difficult to seat after exposure, reassess the material against the liquid involved. Clean the mating faces before fitting a replacement, and avoid compensating for a damaged seal by tightening the lid beyond its intended position.

Material options

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

Hardness selection

Rubber: 30–90 Shore A. Align the ring without twists, and keep its section within the intended groove before closing the bottle.

Custom dimensions

Examine the ring after opening for a shifted position, a folded area or damage along one edge.

Fit & assembly

Evaluate the assembled closure using the intended contents, exposure duration and care method.

Use & inspection

Clean the mating faces before fitting a replacement, and avoid compensating for a damaged seal by tightening the lid beyond its intended position.

Photos illustrate structure or material only. Oil resistance must be selected for the actual liquid and contact conditions rather than inferred from the ring's appearance. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.