حلقات O من السيليكون | AS568-155 | داش 155 | متوافقة مع FDA | صلابة 70 | أحمر (55/عبوة)

The high temp rating on these was exactly what I needed for a manifold repair near an engine block. After a week in service at around 300°F, they’ve held a perfect seal without any softening or cracking.

I had to rebuild a seal in a hot water line, and these handled the 212°F service without any trouble—the 70 durometer feels sturdy but still seats easily. Pack of 55 is nice to have spares, too.

The red color makes them easy to spot in my bin of mixed seals, and the 70 durometer feels just right for the pneumatic application I needed them for. Arrived in a 55-count pack that’s exactly as described, so no running out mid-project.