The benefits of the patented seal concept are provided by the innovative functional principle of the trapezoidal profile cross-section. Both lateral profile flanks are inclined so that the seal profile tapers towards the seal surface. The profile can thus retain the robust and compact form typical of piston seals without losing any of the flexibility required to achieve a pressure-related maximum compression. The edge angle created by the special Glyd Ring® T cross-sectional form permits an additional degree of freedom and enables a slight tilting movement of the seal. The maximum compression is thus always shifted towards the area of the seal edge directly exposed to the  ressure. On the low-pressure edge of the seal, on the other hand, the Glyd Ring® T exhibits only zones with neutral strains without compressive or shearing loads, thus effectively reducing the danger of gap extrusion.

• Pressure : Up to 50 MPa
• Speed : Up to 15 m/s
• Temperature : -30 °C to +200 °C (depending on O-Ring material)
• Media : Mineral oil based hydraulic fluids, flame retardant hydraulic fluids, environmentally safe hydraulic fluids (bio-oils), phosphate ester and others, depending on the seal and O-Ring material compatibility
• Clearance : The maximum permissible radial clearance Smax. is shown in the table on the next page as a function of the operating pressure and functional diameter.

• Very good static leak-tightness
• Increased clearance possible (approx. +50%), depending on the operating conditions
• Low friction, no stick-slip effect. Simple groove design
• Minimum static and dynamic friction coefficient for a minimum energy loss and operating temperature
• Suitable for non-lubricating fluids depending on seal material for optimum design flexibility
• High wear resistance ensures long service life
• No adhesive effect to the mating surface during long period of inactivity or storage
• Suitable for most hydraulic fluids in relation with most hardware materials and surface finish depending on material selected
• Due to the larger extrusion gap, safe use even with contaminated media
• Installation grooves also to ISO 7425-2
• Available for many diameters from 10 to 250 mm