A: Connect pressure gauges to the diagnostic ports; controls feeling heavy or stiff until fluid warms up and visible external oil weeping around the valve stem indicate failed seals.
A: Mechanics must thoroughly wash the mounting recess with solvent to clear out old gasket debris, and check that the internal splines seat smoothly without forcing components.
A: Yes, it is precision-packaged according to original technical drawings to fit standard interface dimensions of this equipment class, giving parts distributors excellent parts matching certainty.
A: The polymer compounds undergo advanced cold-flex temperature treatment during manufacturing, allowing the rings to keep high flexibility down to -30°C and stop dry startup leaks.
Q: What quality options are available?
A: We provide original, OEM, and high-quality aftermarket versions with stable supply capability.
Q:Why Choose RITO?
A:Listed Factory
Stable&Reliable Quality
OEM Factory for Chinese Top Excavator Brands
Supplier to Fortune 500 Companies






















