Operating Conditions 

Pressure Up to 60 MPa
Speed Up to 15 m/s with linear movements, frequency up to 5 Hz
Temperature -45 °C to +200 °C. Depending on seal and O-Ring material
Media Mineral oil-based hydraulic fluids, flame retardant hydraulic fluids, environmentally friendly hydraulic fluids (bio-oils), phosphate ester, water and others, depending on the seal and O-Ring material.
Clearance The maximum permissible radial clearance Smax is shown in Installation Recommendation, as a function of the operating pressure and functional diameter.

Important Note :The above data are maximum values and cannot be used at the same time, e.g. the maximum operating speed depends on material type, pressure, temperature and gap value.

Temperature range also depends on media.



Recommended Materials 

The following material combinations have proven effective for hydraulic applications:


REM in PS8WM

All round material for light to heavy hydraulic applications with linear, short stroke or helical movements in mineral oils, flame retardant hydraulic fluids, phosphate ester, bio-oils or fluids having lubricating properties:

O-Ring NBR 70 Shore A N
FKM 70 Shore A V
Set Code PS8WMN or PS8WMV


REM in PS61B

For medium to heavy applictions with linear movements in mineral oils and other media with good lubrication:

O-Ring NBR 70 Shore A N
FKM 70 Shore A V
Set Code PS61BN or PS61BV

Materials for REM 

Installation Dimensions - Standard Recommendations 

Series No. Rod Diameter dN f8/h9 Groove Diameter Groove Width
Standard Application Available Range D1 H9 L1 +0.2
REM 10 - 19.9 6 - 100.0 dN + 4.5 3.6
REM 20 - 39.9 10 - 200.0 dN + 6.2 4.8
REM 40 - 119.9 20 - 400.0 dN + 9.4 7.1
REM 120 - 399.9 35 - 650.0 dN + 12.2 9.5
Series No. Radius Radial Clearance Smax O-Ring Cross Section
r1 max 10 MPa 20 MPa 30 MPa d2
REM 0.4 0.40 0.25 0.15 1.78
REM 0.6 0.40 0.25 0.20 2.62
REM 0.8 0.50 0.30 0.20 3.53
REM 0.8 0.60 0.35 0.25 5.33

Ordering Guide

REM complete with O-Ring, standard application:

Series REM
Rod Diameter dN = 250.0 mm
TMK Part No. REM2500095

REM 2500 095 PS8WM N

   1        2      3         4        5

1 TMK Series No.
2 Rod Diameter x 10
3 Groove Width x 10
4 Material Code ( Seal Ring )
5 Material Code ( O-Ring )

Installation Dimensions / TMK Part No.