حلقات O-Ring من Viton FKM مقاس 0.21 بوصة CS × 2.975 بوصة ID | AS568-337 | داش 337 | صلابة 90 (25/عبوة)

The 90 durometer hardness makes these feel substantial and they seated perfectly in my groove without any twisting. I've torqued the assembly to full pressure and held it at 350°F with zero weeping so far, which is exactly what I needed from a fluoroelastomer seal.

I had a leaking hydraulic fitting that these o-rings sealed perfectly, even at the upper end of the 400°F range. The 90 durometer hardness feels solid and they didn't deform after a long cycle.

I've been running these at about 350°F in a hot oil application for three weeks now, and the 90 durometer hardness is holding up way better than the cheaper Buna-N ones I used to burn through. The 2.975" ID seated snugly in my groove without any stretching to make it fit.