حلقات O من السيليكون مقاس 0.21 بوصة CS × 6.225 بوصة ID | AS568-356 | داش 356 | متوافقة مع FDA | صلابة 70 | أحمر (16 / عبوة)

I needed a high-temp seal for my autoclave door, and these red silicone rings fit perfectly at 6.225" ID. The 70 durometer feels just right—firm enough to seal but not too stiff to install. Surprised they came 16 to a pack, so I've got spares for the next few replacements.

Just installed these on a chemical mixing tank and the 70 durometer red silicone handled the heat cycling perfectly — no leaks at all. The FDA compliance was a must for our application, and they fit the 6.225" ID groove like they were made for it.

These replaced the seals on a commercial pressure cooker lid; the 70 durometer silicone and wide temperature range were exactly what I needed. They slipped on without any special tools and seal perfectly.