派克OK型活塞組合密封圈-Parker - OK HYDRAULIC PISTON SEALING SET
Parker - OK DOUBLE-ACTING PISTON SEAL
Piston compact seal (OK), View parker OK seal
The OK profile is a bi-directional piston seal designed for heavy duty hydraulic applications. Its durable, two piece design installs easily onto a solid piston without the necessity of auxiliary tools. When installed into the bore, the diameter of the OK profile is compressed to close the step cut in the cap to provide excellent, drift free sealing performance. The glass filled nylon sealing surface handles the toughest applications. It will resist shock loads, wear, contamination, and will resist extrusion or chipping when passing over cylinder ports. The rectangular NBR elastomer energizer ring ensures resistance to compression set to increase seal life.
Standard Materials:
Cap
W4650N MolyGard
Energizer
80A NBR
Alternate Materials: For applications that may require an alternate energizer material, please contact your local Parker Seal representative.
Availability: 1.500" to 8” bore diameter
Main advantages:
Small profile.
Resistant against shock loads.
Low break-out and running friction even after extended standstill under high pressures.
Simple installation on solid piston without the necessity of auxiliary tools due to the split design of the cylinder sealing ring.
High abrasion resistance.
High extrusion resistance at high pressures and large gaps due to the special compound properties of the cylinder sealing ring.
Perfect static and dynamic sealing function.
Suitable for housings according to ISO 7425-1.
Range of Application:
Working pressure max. 500 bar
Working temperature -30 / +110 °C
Surface speed max. 1,0 m/s
