Self-adjusting grommet.

This universal grommet is designed to adjust to different wire, cable and, tubing diameters, including 0.125- to 0.312-in. It features a self-adjusting rubber membrane that forms a dust-resistant seal. The 0.650 in.-OD grommet mounts in a 0.500 in. hole in 0.062 in. thick material, which retains it in place while allowing the membrane to adjust itself and make the seal. The grommet is made of black thermoplastic rubber for long life.