Apeks DIN O-ring, Qty of Ten

This less common size O-ring better fits the slightly smaller o-ring groove of Apeks brand DIN connectors, see the discussion in our TekTip below. These EPDM elastomer ISO BS 3601 imperial standard 111 size (SAE AS568-111 equivalent) O-rings are black color and 80-duro. Genuine OEM 10-pack of BS-111 size O-rings for DIN (aka G 5/8) connectors as supplied by Apeks in a paper envelope for use with their Nitrox Ready and Oxygen first stages.

The Apeks 111 size O-ring is a black color EPDM 80 durometer, however we also offer our top-quality generic 111 size O-ring in brown color fluorocarbon elastomer (aka Viton™, aka FKM, aka FPM) 90 durometer which is a slightly harder version that will wear a little better and is about half the price. See Related Products above.