0.139" CS×0.671" ID 矽膠O型環 | AS568-209 | 代號209 | 硬度70 | 紅色 (1,000個/包)

These red silicone o-rings fit perfectly into my vacuum fixture, and the 70 durometer gives them just the right amount of firmness without being too hard to seat. I've been running them at around 400°F and they haven't degraded at all after several cycles.

These red silicone o-rings were exactly what I needed for a high-temp seal application. The -80°F to +450°F service range gives me confidence they’ll hold up where standard rubber would fail.

I needed o-rings that could handle both extreme heat and cold, and these silicone ones with a 70 durometer have been flawless so far. The 0.671" inner diameter was exactly what my assembly required, no slipping or deformation after several cycles.