0.103" CS X 1.174" ID حلقات O من Viton FKM | AS568-123 | داش 123 | حلقة X | صلابة 70 (50/عبوة)

These are exactly the right dimensions for my hydraulic unit, and the Viton material feels noticeably sturdier than the nitrile ones I used before. The 400°F temperature rating gives me confidence they'll hold up in the hot zones.

My old seals kept failing around the transmission, but these handled the 300-degree heat soak on my truck without any hardening. The 0.103" cross-section seated snugly into the groove and the pack of 50 means I've got spares for the next few rebuilds. Exactly what the spec sheet promised.

The 70 durometer rating gives these o-rings a nice firm feel during installation without being too stiff to work with. They're holding up perfectly under high heat near my furnace where cheaper rubber always cracked within a month.