Custom made rubber silicone end cap for tubing

Silicone rubber tubing caps cover the tube exterior and its exposed end. The overlap along the tube helps establish the fitted position, while the closed portion covers the opening. Custom dimensions allow those two areas to be matched to the tubing instead of selecting a cover by outside appearance alone.

Consider how far the cap should slide on and what limits that movement. If a nearby fitting stops the mouth early, the tube may not reach the intended position inside the cap. Conversely, pushing too far can concentrate force against the closed end. Measure the available straight length as well as the tube's outside profile. Deburr the tube and fit the cap evenly, keeping its mouth square to the axis. After removal during servicing, check for a ring-shaped cut inside the closed portion, which can reveal contact with an unfinished tube edge. Keep the cap cavity free of loose particles before refitting it so those particles are not transferred into the tube opening.

Material options

Custom silicone compound; formulation and geometry developed together.

Hardness selection

Silicone options: 20–80 Shore A. Conversely, pushing too far can concentrate force against the closed end.

Custom geometry

Measure the available straight length as well as the tube's outside profile.

Fit evaluation

Consider how far the cap should slide on and what limits that movement.

Color & OEM

Custom colors; OEM identification positioned outside closure contact surfaces.

Photos illustrate structure or material appearance only. The overlap along the tube helps establish the fitted position, while the closed portion covers the opening. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.