حلقات O من بونا-إن نيوتريل | AS568-404 | داش 404 | صلابة 70 | أسود (60 / عبوة)

Fitting these 404s onto my hydraulic fittings was easier than I expected — the 70 durometer rubber has just the right amount of give without being flimsy. The whole pack arrived neatly sealed, and every ring I’ve used so far seats perfectly without needing to stretch or force it.

I needed a supply of AS568-404 o-rings and these hit the spec perfectly, with the 70 durometer feeling just right for my hydraulic fittings. They slid into place easily and seem to hold up well under moderate heat, so I'm stocked up for a while.

These are exactly the right size for the AS568-404 housing I'm using, and the 70 durometer feels firm but not brittle when installing. The black buna-n material handled the heat cycling in my application without any issues, so I've already ordered another pack for spare parts.