rubber cap cover/rubber dust cap/round silicone rubber end caps

Round silicone rubber end caps fit over a circular termination to provide a molded covering. Custom internal diameter and depth establish the cavity, while wall thickness, hardness and color determine the finished configuration. The cavity should reflect the full end profile, including any radius or projection inside the covered area.

Check where the cap is intended to stop. Side engagement and contact at the closed face are different relationships, and the design should allow each to occur as intended. If an internal projection reaches the closed face first, the cap may look fitted while its sidewall remains only partly engaged. Avoid forcing it further until the interference is understood. Keep the interior free of particles before installation, particularly where the cap covers a finished surface. Remove by the accessible body rather than stretching a small portion of the rim. Match the silicone formulation to the surrounding materials and exposure, and inspect the lip for tears after repeated removal so the cap continues to sit in its intended position.

Material options

Custom silicone compound; formulation and geometry developed together.

Hardness selection

Silicone options: 20–80 Shore A. Remove by the accessible body rather than stretching a small portion of the rim.

Custom geometry

Custom internal diameter and depth establish the cavity, while wall thickness, hardness and color determine the finished configuration.

Fit evaluation

Check where the cap is intended to stop.

Color & OEM

Custom colors; OEM identification positioned outside closure contact surfaces.

Photos illustrate structure or material appearance only. Custom internal diameter and depth establish the cavity, while wall thickness, hardness and color determine the finished configuration. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.