حلقات O-Ring من Viton FKM مقاس 0.21 بوصة CS × 1.85 بوصة ID | AS568-328 | داش 328 | صلابة 75 ديرومتر | بني (25 / عبوة)

Installed these on a hot oil line that regularly runs past 300°F and they haven't softened or deformed after a month of cycling. The 75 durometer hardness feels just right under the wrench, and the brown color makes them easy to spot during inspection.

Put these on my homebrew keg's pressure relief valve and the Viton material held up perfectly during a 30-minute boil cycle. The brown color makes them easy to spot against the metal, and the 75 durometer feels just right for a snug seal.

Fit these Viton o-rings perfectly on my old hydraulic pump, and the 75-durometer rubber feels much more durable than the standard Buna ones I used before. They sealed up the leak on the first try, even with the fluid running hot.