
HY7220 Glycol Ring
Consists of a rectangular cross-section slider made of high-wear PTFE or engineering plastic, combined with an elastomeric O-ring.
Technical Specifications:
Working pressure: ≤63 MPa
Operating temperature: -50 to 200 °C (varies by rubber material; fluorocarbon rubber can reach up to 200 °C)
Motion speed: ≤15 m/s
Compatible Media: Hydraulic oil, water, ethylene glycol, air, etc. (Specific compatibility depends on O-ring material)
Application media: mineral hydraulic oil, synthetic lubricants, water-glycol mixtures, air, etc.
Applications: Widely used for piston seals (bidirectional sealing) in construction machinery, injection molding machines, metallurgical equipment, marine vessels, and industrial hydraulic systems. Ideal for high-pressure, high-frequency, long-stroke applications requiring low friction and no stick-slip in precision hydraulic cylinders.