حلقات O-Ring من Viton FKM 0.103 بوصة CS × 1.361 بوصة ID | AS568-126 | داش 126 | صلابة 90 (150/عبوة)

The high temp rating of 400°F is what sealed it for me, as these hold up perfectly in my engine bay without degrading like standard Buna-N rings do. They fit the groove snugly and the 90 durometer feels much sturdier than the softer ones I used before.

The 90 durometer hardness is exactly what I needed for a high-pressure seal, and the -15°F to +400°F range gives me confidence for both cold starts and hot runs. Installed a few into a steam line fitting and they seated without any trimming or fighting.

These o-rings fit perfectly in my vacuum seal application, and the 90 durometer feels noticeably firmer than the standard ones I've used before. They handle the 400°F heat cycling without any cracking or deformation so far. Exactly what I needed for a reliable high-temp seal.