حلقات O-Ring من PTFE مقاس 0.103 بوصة CS × 0.237 بوصة ID | AS568-108 | داش 108 | صلابة 10 (50 / عبوة)

These o-rings fit perfectly into my high-temp valve assembly, and the 10 durometer PTFE is noticeably more pliable than standard Teflon seals I’ve used. The package of 50 is a solid value for replacing worn-out parts in a single batch.

The temperature range is what sold me—needing something that holds up at -350°F is rare, and these PTFE rings fit the AS568-108 spec perfectly. The 10 durometer gives them a flex I didn't expect from Teflon, which made installation onto the shaft a lot less fiddly.

The extra-soft 10 durometer PTFE makes these seals seat perfectly in grooves where standard o-rings would leak, and they handle cryogenic temps without cracking. Exactly what I needed for a delicate vacuum fitting repair.