Customized small sizes NBR silicone SBR rubber stopper/covers

A small SBR rubber stopper should be developed from the complete opening profile, including any shoulder or depth change below the visible rim. The head can be shaped for handling, but it should not conceal a body that stops short of its intended retained position.

NBR, silicone and SBR are separate material choices. Select the formulation for the actual contact and service conditions before evaluating its insertion and removal behavior. Custom dimensions and colors can follow the selected configuration.

Trial the stopper in the finished mating part and inspect the seat after representative handling. If it requires excessive force, compare the hidden geometry rather than cutting the body to make it enter farther. During maintenance, keep small similar closures organized by their assigned openings. A replacement should match the designated material and retained section, not only the visible head size, so the fit established for the original assembly is preserved when the new part is installed.

Material options

Custom silicone or NBR / SBR formulation; select the compound alongside the mating geometry.

Hardness selection

Silicone: 20–80 Shore A; solid rubber: 30–90 Shore A. Select the formulation for the actual contact and service conditions before evaluating its insertion and removal behavior.

Custom geometry

A small SBR rubber stopper should be developed from the complete opening profile, including any shoulder or depth change below the visible rim.

Fit evaluation

Trial the stopper in the finished mating part and inspect the seat after representative handling.

Color & OEM

Custom colors; OEM identification positioned outside closure contact surfaces.

Photos illustrate structure or material appearance only. A small SBR rubber stopper should be developed from the complete opening profile, including any shoulder or depth change below the visible rim. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.