NOK Type Hydraulic Piston Seal SPGW

NOK Type Hydraulic Piston Seal SPGW

SPGW is a compact double acting piston seal assembly designed for one piece pistons and is suitable for low to high pressure, medium to heavy duty applications. The assembly comprises as standard a self lubricating wear resistant bronze filled PTFE cap ring, which is loaded by a NBR energiser. Thermoplastic splite anti-extrusion rings support the seal on both sides and prevent contamination of the energiser and cap ring.

SPGW piston seal is designed to be used in a variety of equipment and is particularly suited to use in earthmoving and other off-highway equipment.

MaterialPower-transmission fluidTemperatureSpeedPressureMax. Gap F
PTFE+bronzeMineral Oil-40 – +110≦ 1.5 m/s160 barF ≦ 1.0 mm
250 barF ≦ 0.8 mm
400 abrF ≦ 0.6 mm
500 barF ≦ 0.4 mm
Chamfers & Rod (mm)ToleranceSurface Finishing
μm Raμm Rt
S ≦77.511.514ØD1H90.1-0.4≦ 4
C ≧4467.5Ød1+0 -0.2≦ 1.6≦ 10
r1 ≧1.61.61.61.6L+0.2 -0≦ 3.2≦ 16

We offer the below sizes

ItemMaterialOD (mm)ID (mm)H (mm)Groove H (mm)
SPGWPTFE+NBR+POM50368.59
SPGWPTFE+NBR+POM55418.59
SPGWPTFE+NBR+POM60468.59
SPGWPTFE+NBR+POM655010.511
SPGWPTFE+NBR+POM705510.511
SPGWPTFE+NBR+POM756010.511
SPGWPTFE+NBR+POM806510.511
SPGWPTFE+NBR+POM857010.511
SPGWPTFE+NBR+POM907510.511
SPGWPTFE+NBR+POM95801212.5
SPGWPTFE+NBR+POM100851212.5
SPGWPTFE+NBR+POM105901212.5
SPGWPTFE+NBR+POM110951212.5
SPGWPTFE+NBR+POM1151001212.5
SPGWPTFE+NBR+POM1201051212.5
SPGWPTFE+NBR+POM12510215.516
SPGWPTFE+NBR+POM13010715.516
SPGWPTFE+NBR+POM13511215.516
SPGWPTFE+NBR+POM14011715.516
SPGWPTFE+NBR+POM14512215.516
SPGWPTFE+NBR+POM15012715.516
SPGWPTFE+NBR+POM15513215.516
SPGWPTFE+NBR+POM16013715.516
SPGWPTFE+NBR+POM16514215.516
SPGWPTFE+NBR+POM17014715.516
SPGWPTFE+NBR+POM17515215.516
SPGWPTFE+NBR+POM18015715.516
SPGWPTFE+NBR+POM18516215.516
SPGWPTFE+NBR+POM19016715.516
SPGWPTFE+NBR+POM19517215.516
SPGWPTFE+NBR+POM20017715.516
SPGWPTFE+NBR+POM22019715.516
SPGWPTFE+NBR+POM22520215.516
SPGWPTFE+NBR+POM2502221717.5
SPGWPTFE+NBR+POM2602321717.5
SPGWPTFE+NBR+POM2702421717.5
SPGWPTFE+NBR+POM2802521717.5
SPGWPTFE+NBR+POM2902621717.5
SPGWPTFE+NBR+POM3002721717.5