حلقات O من EPDM بقطر داخلي 0.103" × 0.924" | AS568-119 | داش 119 | صلابة 70 | أسود (300/عبوة)

These handled the heat from the hot water circulating in my brewing system without any swelling or hardening. The 70 durometer is just firm enough to hold a good seal when compressed.

The inner diameter is exactly 0.924" as spec'd, so these seated perfectly in my pneumatic manifold. Temperature range down to -65°F gives me confidence for outdoor winter use.

Used a few of these for a hydraulic repair on an old press, and the 70 durometer EPDM held up well under constant oil exposure. The -65°F to +300°F range gives me confidence for outdoor equipment that sees harsh winters. For the price per pack, you get a solid handful of spares for future jobs.