What’s the difference for UN and UHS seals

UN and UHS seals are very common in domestic oil seals, and many people do not understand what they mean, and what is the difference between UN and UHS seals?

First of all, let’s say what the UN seal ring and UHS seal are respectively. UN seal ring is a universal seal ring for shaft holes, polyurethane material, mainly used in hydraulic cylinder seals. UHS sealing ring is a general sealing ring for piston and piston rod, PU material, which belongs to a hydraulic sealing ring.

From the above, we can see that the UN sealing ring and the UHS sealing ring are universal sealing rings for hydraulic cylinders, both of which are made of PU polyurethane.

So what’s the difference?

First of all, the UN seal ring is the standard of DINGZING DZ Company in Taiwan, and the UHS seal ring is the standard of Walka company in Japan, and these two seal ring models have become the standard model of the seal ring (private industry standard).

UN, UHS seal ring operating temperature: -20℃-100℃

UN, UHS seal ring working pressure: 30Mpa

UN, UHS sealing ring working speed: 0.03-0.5m/sec

It can be seen from the above that the UN and UHS seals can be replaced by each other