حلقات O-Ring HNBR | AS568-150 | داش 150 | 90 دورومتر (25/عبوة)

These held up perfectly at 280°F in my hydraulic system, which was the real test I needed. The 90 durometer feels tough and durable, no swelling or leaks after weeks of use. Exactly what I needed for this high-heat application.

Used these to rebuild a pressure washer pump and they fit perfectly without any leaks. The -40°F tolerance gives me confidence for outdoor winter storage.

The 90 durometer rating is spot on—these rings feel firm enough to hold a proper seal without being brittle. I've torqued them into a groove that runs hot all day and they haven't softened or deformed after a month of use.