حلقات O-Ring من HNBR | AS568-430 | داش 430 | صلابة 80 (5 / عبوة)

I've been using these HNBR o-rings for a high-temp pneumatic application and they seal perfectly even at 280°F. The -40°F low-end rating gives me peace of mind for winter use.

The 80 durometer rating is spot on—these seals feel firm and durable without being brittle, and they slid into the groove perfectly on the first try. I've ordered cheaper kits before, but the temperature range listed here gives me confidence for the hot side of my setup.

Working on a hot water valve that cycles daily, these HNBR 430s have held up perfectly where standard Buna-N would have hardened. The 80 durometer gives them a firm, reliable seal without being too hard to install.