حلقات O من السيليكون | AS568-462 | داش 462 | متوافقة مع FDA | صلادة 70 | أحمر (4 / عبوة)

I’ve been using these red silicone o-rings on a lab vacuum setup that sees temperatures around 300°F, and they’ve held up perfectly without any hardening or cracking. The 70 durometer feels solid yet still seals smoothly under pressure. For the price of a 4-pack, these are exactly what I needed.

Ordered these for a high-temp steam application and they fit perfectly with no leakage. The 70 durometer feels just right—firm enough to hold pressure but not brittle. A solid choice for any project needing reliable heat resistance.

I needed a high-temp seal for a hot oil line and these red ones handle up to 450°F without any issue so far. The 70 durometer feels firm but not brittle, and the four pack was exactly what I needed for two fittings.