حلقات O-Rings فيتون FKM بقطر مقطع 0.21" وقطر داخلي 4.1" | AS568-346 | داش 346 | صلابة 75 | أسود (10/عبوة)

The 75 durometer feel is noticeably firmer than the cheap rubber ones I’d been using, and they slide into the groove without rolling or twisting. I torqued the fitting down and it sealed straight away, no leaks. At 4.1 inches ID, they fit my flange perfectly, and the heat rating gives me peace of mi

These are replacing some old Buna-N ones on a valve that sees steam up to 300°F, and the 4.1" inner diameter fit the groove perfectly without any stretching hassle. I've only had them on for a few weeks, but the Viton material feels noticeably more robust than the cheap rubber ones I used to get.

The heat rating is exactly why I bought these for my compressor rebuild, and they sealed perfectly on the first try with no leaks. These Viton rings feel much more durable than the standard Buna-N ones I used before.