These Rubber O-rings are for our High Intensity Flush Mount LED Bolt. Adding these rings can avoid water ingress from the surface. It also prevents scratches on the surface of mounting panel.

6mm LED Bolt uses OD 5 / ID 3 / Thick 1 mm
11mm LED Bolt uses OD 10 / ID 7 / Thick 1.5 mm
16mm LED Bolt uses OD 15 / ID 12 / Thick 1.5 mm

Available three sizes for our 6mm, 11mm and 16mm LED bolt.