حلقات O من PTFE 0.103 بوصة CS × 0.299 بوصة ID | AS568-109 | داش 109 | صلابة 10 (75/عبوة)

Swapping out my old Viton seals for these PTFE rings made a noticeable difference in the high-temp oven valve—the 0.103" cross-section fits perfectly and no more sticking.

Needed a super low-friction seal for a high-temp pneumatic line, and these 10 durometer PTFE rings fit the bill perfectly. The 0.103" cross-section feels sturdy, and the -350°F to +500°F range covers everything I throw at them.

Used these in a cryogenic application down to -300°F and they sealed perfectly without cracking. The PTFE material is noticeably stiffer than rubber, which made installation a bit tricky, but once seated they hold up really well.