Rubber rectangular seal waterproof water bottle rubber seal ring

A custom water bottle rubber seal ring fits the sealing path between the bottle and its closure components. A rectangular profile needs matching sides and corner transitions, as well as the section dimensions required by the joint. The seal should sit in its intended recess or contact area without being stretched into shape.

Evaluate the ring with the actual bottle closure. The way a lid is fastened or latched determines how compression reaches different parts of the seal. A twisted corner or a section displaced from its seat can be hidden once the lid is closed. Inspect the full path before closing and check the completed assembly in the orientations intended for use.

Select the rubber formulation for the bottle contents and cleaning conditions. Remove residue from the groove and seal before reassembly, and avoid prying the ring out with a sharp tool. After cleaning, place it back in its correct orientation and seat. Replacement should preserve the exact outline and section so the closure operates with the intended contact rather than requiring extra closing force.

Material options

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

Hardness selection

Rubber: 30–90 Shore A. The way a lid is fastened or latched determines how compression reaches different parts of the seal.

Custom dimensions

A rectangular profile needs matching sides and corner transitions, as well as the section dimensions required by the joint.

Fit & assembly

Inspect the full path before closing and check the completed assembly in the orientations intended for use.

Use & inspection

Remove residue from the groove and seal before reassembly, and avoid prying the ring out with a sharp tool.

Photos illustrate structure or material only. A rectangular profile needs matching sides and corner transitions, as well as the section dimensions required by the joint. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.