حلقات O-Ring من النتريل Buna-N | AS568-406 | داش 406 | صلابة 70 | أسود (55 / عبوة)

I needed a solid set of backup o-rings for a hydraulic repair, and these dash 406s fit the groove perfectly with that 70 durometer feel. The temperature range down to -40°F gives me confidence they’ll hold up in cold weather.

The 70 durometer hardness is spot-on for the AS568-406 sizing I needed, and they slid into place without any fuss. Handled my hot water line up to about 180°F with zero leaks so far, which gives me confidence in that 250°F rating.

Had a stubborn water line valve that kept seeping, but these 406 o-rings did the trick once I matched the dash size. The 70 durometer feels like the right balance of firmness and flexibility for a snug seal.