asymmetric rod seal, for special housings (DIN/ISO 7425 part 2) and for the use as a primary rod seal in sealing system. due to design with active back-up ring suitable for high pressure peaks or larger extrusion gaps.

two-piece RS 02-C seal set for use as a primary  rod seal. the S02-S seal set is always used in a sealing system in combination with U-ring.


not bolded symbols; please consult our technical for application limitations

category of profile

machined or molded/standard/trade product.

single acting

the RS 02-C seal is designed for use as a rod seal.

area of application: hydraulics

earth moving equipment, agricultural machinery, injection moulding machines, industrial vehicles, cranes, standard cylinders.


the Jet Seal Pars U-Ring Syprim RS 02-C is designed  especially for use as a system seal

  • short primary seal.
  • no pressure enclosed between primary and secondary seal.
  • low friction.
  • highly wear-resistant.
  • protection against extrusion through activated back-up ring.

gap dimension

the decisive factor for the function of the seal is the largest gap dimension occurring during operation on the non-pressurised side of the seal.

 operating pressure  cs = (ØD – Ød)/2 mm
4 5
 safe extrusion gap (mm)
100 bar (10 MPa) 0.80 1.00
200 bar (20 MPa) 0.60 0.70
300 bar (30 MPa) 0.40 0.50
400 bar (40 MPa) 0.30 0.30

important note:

the above data are maximum value and can’t be used at the same time. e.g. the maximum operating speed depend on material type, pressure, tem- perature and gap value. temperature range also dependent on medium.

surface quality

surface roughness

Rtmax (μm)

Ra (μm)

sliding surface ≤2,5 ≤0,1-0,5
bottom of groove ≤6,3 ≤1,6
groove face ≤15 ≤3

tolerance recommendation

seal housing tolerances
Ød f8
ØD H10

fitting & installation

careful fitting is a prerequisite  for the correct function of the seal.

seal & housing recommendations

please note that we are able to produce those profiles to your specific need or any non standard housing. for detail measurements, please see Jet seal pars  catalog…

don’t hesitate to contact our technical department for further information or for special requirements (temperature, speed etc.), so that suitable materi- als and/or designs can be recommended.