silicone dust cover rectangular rubber usb cover

A rectangular rubber usb cover closes the unused port area with a custom silicone component. Its outer shape can follow the device housing, while the locating portion is developed around the exact connector arrangement. Size, color and hardness can be adapted to the product rather than treating every rectangular opening as the same USB interface.

The housing recess often determines access. Check its width, corner radii and depth alongside the port itself, and allow room for the cover to be withdrawn without pushing against neighboring controls. The inserted portion must stay clear of contacts and internal connector features. A cover that looks flush outside can still extend too far inside if these dimensions are considered separately. Remove loose dirt from the exposed face before opening the port, and keep the cover's inner surface clean while a cable is connected. Refit it squarely after the cable is removed. Any liquid protection requirement belongs to the complete enclosure and closure design, since a dust cover's rectangular shape alone does not establish that performance.

Material options

Custom silicone compound; formulation and geometry developed together.

Hardness selection

Silicone options: 20–80 Shore A. Refit it squarely after the cable is removed.

Custom geometry

Check its width, corner radii and depth alongside the port itself, and allow room for the cover to be withdrawn without pushing against neighboring controls.

Fit evaluation

The inserted portion must stay clear of contacts and internal connector features.

Color & OEM

Custom colors; identification clear of connectors and removal features.

Photos illustrate structure or material appearance only. The inserted portion must stay clear of contacts and internal connector features. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.