0.139" قطر مقطع X 0.609" قطر داخلي حلقات O من السيليكون | AS568-208 | داش 208 | متوافق مع FDA | صلابة 70 | أحمر (250 / عبوة)

The 70 durometer feels just right for my application, and the bright red color makes them easy to spot against dark metal parts. I used these to seal a hot fluid line, and they performed perfectly up to 400°F without any degradation.

These fit perfectly on my pressure cooker valve stem; the 70-durometer silicone is stiff enough to hold a good seal even at high heat. Glad I went with the FDA-compliant material for this food-contact application.

I've been hunting for o-rings that can handle high heat for a hot-water setup, and these silicone ones are rated up to 450°F which is exactly what I needed. The 0.609" inner diameter fits perfectly on my fittings, and they've held up without any swelling after a week of use.