How to place the O-ring on the chin straps The PDF below shows how the O-ring should be placed on the chin straps. 2019-03-14-O-ring-assembly-lowres.pdf 200 KB Download Related articles How to change the male part on the chin strap buckle How to change the occigrip on a snow helmet How to change Blaster Goggle goggle strap How to change Trooper & Grimnir 2Vi goggle strap How to change the outriggers on your Interstellar goggles.