XCMG Spare Parts O RING 258X7 803197023

This XCMG O-ring, part number 803197023, is a direct replacement for what originally came on your machine. We stock it under the size 258X7—258 mm inner diameter, 7 mm section. No guesswork, no aftermarket gamble. It’s the same seal used in factory assembly.

You’ll find this one doing the heavy lifting on hydraulic pumps, valve banks, and large-diameter pipe connections. It’s built to handle high pressure and constant oil exposure without hardening or taking a set. If you’re chasing a persistent leak on a wheel loader or excavator, this is usually the culprit.

Material is standard NBR, 70 Shore A, with good resistance to mineral oils and moderate heat. It holds up under sustained working temps and seats cleanly in the groove. For applications requiring higher heat or different fluids, cross-check before swapping—but for most XCMG gear, this is the correct spec.

When installing, take a second to clean the gland and lube the ring lightly with clean hydraulic oil. It fits snug, so make sure it’s not twisted. A rolled seal will fail fast, and that’s one headache you don’t need after buttoning up a heavy assembly.

Keep a couple of these 803197023 on hand if you’re running XCMG machines. They’re cheap insurance against unplanned downtime. When a seal this size goes, the machine stops—no warning, no workaround.