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Popular Q&A

March 8, 2022


What's the difference between a Greyhound and a Stephane? ?


Both the Gree ring and the step seal are made of a combination of a PTFE material and an O-ring seal. Gray ring is a two-way seal, generally used for piston sealing, and the O-ring is on the inside. Gray ring: It is composed of high wear-resistant PTFE composite rectangular ring seal and O-shaped rubber seal. The O-ring provides sufficient sealing force to compensate for the wear of the rectangular ring seal. It is used in conjunction with the guide support ring, and the size of the cylinder diameter is less than 40 should use the split groove. Suitable for hydraulic cylinder piston sealing, bidirectional sealing. The working pressure of the Gree ring: 0-40MPa high 60MPa The reciprocating speed of the Gree ring: ≦5m/s The swinging or rotating motion of the Gree ring: ≦3m/s The operating temperature of the Gree ring: -40℃-+200℃( Depending on the material of the O-ring) Gree ring is suitable for medium: hydraulic oil, steam, water, emulsion, etc. Step seals are one-way seals, generally used for piston rod seals, and sometimes single-acting piston seals, with O-rings on the outside. Step seal: It consists of a stepped ring seal and an O-ring rubber seal. The O-ring provides sufficient sealing force and compensates for the wear of the stepped ring seal. Suitable for seals for hydraulic cylinder piston rods. The working pressure of the seal: 0-40MPa high 60MPa The reciprocating speed of the seal: ≦5m/s The swing or rotation of the seal: ≦3m/s The temperature of the seal: -40℃-+200℃ (by Depending on the material of the O-ring), the applicable price and quality of the step seal: hydraulic oil, steam, water, emulsion, etc.


Are cylinder liner seals the same as cylinder liner gaskets? ?


Normally, the liner seal and the liner gasket are different, but there will be word mistakes. Sometimes the on-site staff will say two different products with the same name. User confirmed. Cylinder liner seals are divided into static seals and dynamic seals, and are under pressure. Cylinder liner seals have O-rings, U-rings, Y-rings and other shapes of seals; while gaskets are static seals, mainly with a square cross-section, and there are other forms.