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 snow helmets How to change the Blaster goggle strap How to change Trooper & Grimnir 2Vi goggle strap How to change the outriggers on your Interstellar goggles.