حلقات O من السيليكون 0.07" مقطع × 4.489" قطر داخلي | AS568-047 | داش 047 | متوافقة مع FDA | صلابة 70 | أحمر (50 / عبوة)

I used these in a vacuum chamber seal where I needed FDA compliance and they’ve held up perfectly through multiple cycles, with no sign of wear. The red color makes them easy to spot during maintenance, which is a nice bonus.

Installed one as a high-temp gasket in a steam valve and it held up perfectly at 300°F without any hardening. The 70 durometer gives just the right amount of squeeze for our metal flanges.

These red silicone o-rings fit perfectly on my smoker door and feel much more pliable than the black ones I've used before. The 70 durometer seems just right for a tight seal without being too stiff to seat properly.