Description
The SPGW profile is a high-performing, double acting compact piston seal composed of a dynamic bronze-filled PTFE friction ring, profiled pre-tightened NBR ring and two POM back-up rings. It is characteristic of excellent performances against leakage, extrusion and friction. SPGW combined sealing ring is especially applicable for long journey. When used for the wide range of fluids and at high temperature, it is applicable for wider spacing of piston. By superposing, SPGW combined sealing ring forms a compact structure and excellent performance, which is installed a single piston groove. Its geometry endows it with overall stability, abrasion resistance, tightness, low friction and long life without maintenance. Because initial shrink range is set, the sealing ring has a good sealing performance under low pressure. When the pressure is raised, the sealing performance keeps still good because the elastomer stresses on the combined sealing ring, thus converting axial force from the system pressure to the radial extrusion. It is applicable for the overloading nylon shield ring. It is designed specially to protect sealing ring from the damage of extrusion, meeting the requirements of all kinds of hydro-cylinder.
Design standard
Refer to AS company's KHD, Trelleborg company's PHD series,Parker company's Y3 and Merkel L27 series when designing.
Advantages
Low friction coefficient; no stick-slip effect
Possible increase in extrusion gaps
Excellent extrusion resistance even during pressure peaks
Excellent abrasion resistance
Assembled by deformation
Materials
Elastomer
NBR 80 Shore A
FKM 80 Shore A
Friction ring
Bronze-filled PTFE
Back-up rings
Polyoxymethylene (POM)
 
Applications
Mobile machinery
Hydraulic cylinders
Working condition
Working Pressure:≤50Mpa;
Surface Speed:≤1.5m/s;
Working Temperature:
Acrylonitrile-butadiene-rubber(NBR):-30~+100ºC;
Fluoro-rubber(FKM):-20~+120ºC;
Working Medium:Hydraulic oil, water, emulsion.

Extrusion gaps

Surface roughness

Chamfers and radius

 

Morgan Seals has the biggest vulcanizing machine(4000T) and different kinds of seal moulds. So for the non standard oil seals, please do not hesitate to contact with us. The following is the the picture of Morgan production line and warehouse:

Our services:
Guangzhou Morgan Seals Co., Ltd the expert in sealing solution field who combines the rich seals research and production experience of her parent firm with the advanced technology and administration of Morgan, Worcester. Morgan Seals Research and Development ability is based on her parent firm who has won awards as scientific research achievements for more than 1000 projects and over 200 of them won scientific and technological progress prizes of municipal, provincial, ministerial and national levels. At the same time, it also has one National Certified Laboratory, one National Engineering Research Centers and three Industry Level Inspection Centers.