description

wiper seal with Polyamide (PA) material.

 

application

 

 

 

category of profile

machined or molded/standard/trade product.

 

single acting

 

operating parameters & material

 

the stated operation conditions represent general indications. it is recommended not to use all maximum  values simultaneously. surface speed limits apply only to the presence of adequate lubrication film.

 

surface quality

surface roughness Ra (μm)
sliding surface according to seal data
bottom of groove ≤ 2.5
groove face ≤ 4.0

 

tolerance recommendation

seal housing tolerances
D H10

 

 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.

 

description

two-piece double wiper consisting of dynamic wiper ring and a static O-ring.

 

application

 

not bolded symbols; please consult our technical for application limitations

 

category of profile

machined or molded/standard/trade product.

 

single acting

 

area of application: hydraulics

hydraulic  systems, reciprocal movements, medium dirt load.

 

function:

the WR 13 is a double function wiper with a sharp wiping edge, a sealing lip on the medium side and an O-ring as a energizing element. this double function consists of wiping the dirt from the surface of the descending piston rod on the one hand and on the other, that the remaining oil film is retained and returned to the system with the next descent. the high wear resistance of the polyurethane provides this wiper with a particularly long service life.

 

media

hydraulic  oils acc. to DIN 51524/51525, lubricating  oils, other mineral oil based fluids  and HFA, HFB, HFC highly non-flammable hydraulic fluids acc. to VDMA 24317.

the stated operation conditions represent general indications. it is recommended not to use all maximum  values simultaneously. surface speed limits apply only to the presence of adequate lubrication film.

 

mode of installation

the prerequisites for perfect functioning are careful fitting and an accurately dimensioned mounting space. in general, wipers snap easily into their housings when distorted into a kidney shape (over 20mm diameter). a large insertion chamfer must be provided (20-30°, length= (D-d)/4).

 

surface quality

surface roughness Rtmax (μm) Ra (μm)
sliding surface according to seal data
bottom of groove ≤6,3 ≤1,6
groove face ≤15 ≤3

 

tolerance recommendation

seal housing tolerances
L +0,2
ØD H9

 

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.

 

description

two-piece double wiper consisting of dynamic wiper ring and a static O-ring.

 

application

 

 

 

not bolded symbols; please consult our technical for application limitations

category of profile

machined or molded/standard/trade product.

 

single acting

 

area of application: hydraulics

hydraulic  systems, reciprocal movements, medium dirt load.

 

function:

the WR 13-E2 is a double  function wiper with a sharp wiping edge, a sealing lip on the medium side and an O-ring as a energizing element. this double function consists of wiping the dirt from the surface of the descending piston rod on the one hand and on the other, that the remaining oil film is retained and returned to the system with the next descent. the special shape of this wiper makes it very robust. due to the very good slide properties of PTFE, it is applied for short strokes, high stroke speed and frequency. it is not suitable for use with an extreme dirt load.

 

media

hydraulic  oils acc. to DIN 51524/51525, lubricating  oils, other mineral oil based fluids  and HFA, HFB, HFC highly non-flammable hydraulic fluids acc. to VDMA 24317.

 

operating parameters & material

the stated operation conditions represent general indications. it is recommended not to use all maximum  values simultaneously. surface speed limits apply only to the presence of adequate lubrication film.

 

mode of installation

the prerequisites for perfect functioning are careful fitting and an accurately dimensioned mounting space. in general, wipers snap easily into their housings when distorted into a kidney shape (over 20mm diameter). a large insertion chamfer must be provided (20-30°, length= (D-d)/4).

 

surface quality

surface roughness Rtmax (μm) Ra (μm)
sliding surface according to seal data
bottom of groove ≤6,3 ≤1,6
groove face ≤15 ≤3

 

tolerance recommendation

seal housing tolerances
L +0,2
ØD H9

 

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.

 

description

PTFE-wiper with O-ring as preloading element. PTFE part takes over wiping function, O-ring maintains equal contact pressure. good dry running properties, no “stick-slip”. excellent chemical and thermal resistance (depends on O-ring ).

 

 

 

 

 

  • the seal profile and close machining tolerances provide a good static seal for the outside diameter, assisting in the prevention of ingress of humidity and foreign matter via the outside diameter.
  • the wiping part consists of PTFE with fillers selected to suit the respective appli- cation, and an O-ring as a preload element. the PTFE part takes over the wiping function, the O-ring maintains even contact pressure.
  • the design of the wiping edge aids recovery of the residual oil film; any dirt is wiped off reliably.
  • pressure build-up on the trailing side is to be avoided if possible.

 

application

 

not bolded symbols; please consult our technical for application limitations

 

category of profile

machined or molded/standard/trade product.

 

single acting

 

area of application: hydraulics/pneumatics

  • reciprocating, swiveling and coiling rods on hydraulic cylinders.
  • push rods and valve stems.
  • (materials must be selected according to operating requirements).

 

advantages:

  • small installation grooves.
  • minimal break-out and dynamic sliding friction. therefore no stick-slip. steady movement is guaranteed even at low velocities.
  • excellent sliding properties.
  • high wear resistance, therefore long service life.
  • available in diameters up to 2000 mm.

 

function:

WR 14 wipers are designed to keep dust, dirt, sand and metal chips from the sealing and guiding elements, thereby abrasive damage caused by external contamination.

for detailed information regarding chemical resistance please refer to our “list of resistance”. for increased chemical and thermal resistance rubber materials are to be preferred, polyurethan materials increase wear resistance.

surface quality

surface roughness Rtmax (μm) Ra (μm)
sliding surface according to seal data
bottom of groove ≤6,3 ≤1,6
groove face ≤15 ≤3

 

tolerance recommendation

seal housing tolerances
L +0,2
ØD H9


 

mode of installation

the prerequisites for perfect functioning are careful fitting and an accurately dimensioned mounting space. in general, wipers snap easily into their housings when distorted into a kidney shape (over 20mm diameter). a large insertion chamfer must be provided (20-30°, length = (D-d)/4).

 

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...

recommended rod Ød range L [mm] ØD ØD1 R max O-ring cross-section
<
6 12 3.7 Ød + 4,8 Ø d +2,7 0.4 1,78
12 65 5 Ød + 6,8 Ø d +3,5 0,4 2.62
65 250 6 Ød + 8,8 Ø d +4,0 0,4 3.53
250 420 8.4 Ød + 12,2 Ø d +4,5 0,4 5.33
420 650 11 Ød + 16 Ø d +5,2 0,4 6.99
650 1000 14 Ød + 20 Ø d +6,6 0,4 8.4

 

fitted:

 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.

 

description

PTFE-double wiper with two O-rings as preloading elements. wiping edge assures a reliable protection against penetration of dust and dirt. additional sealing lip for reduction of residual oil film if used in combination with O-ring activated PTFE seals type S09 (tandem).  excellent chemical and thermal resistance (depends on O-ring ).

 

 

 

  • the seal profile and close machining tolerances provide a good static seal for the outside diameter, assisting in the prevention of ingress of humidity and foreign matter via the outside diameter.
  • the wiping part consists of PTFE with fillers, selected to suit the respective appli- cation, and two O-rings as preload elements. the PTFE part takes over the wiping function, the O-rings maintain even contact pressure.
  • the design of the wiping edge aids recovery of the residual oil film; any dirt is wiped off reliably.
  • in addition, the sealing edge reduces the residual oil film on the side of the me- dium if composite seals on PTFE basis, (e.g. S09), are used (tandem arrangement). in the standard design, pressurisation should be limited to 16 bar.

 

application

 

 

 

not bolded symbols; please consult our technical for application limitations

 

category of profile

machined or molded/standard/trade product.

 

double acting

 

  • the seal profile and close machining tolerances provide a good static seal for the outside diameter, assisting in the prevention of ingress of humidity and foreign matter via the outside diameter.
  • the wiping part consists of PTFE with fillers, selected to suit the respective appli- cation, and two O-rings as preload elements. the PTFE part takes over the wiping function, the O-rings maintain even contact pressure.
  • the design of the wiping edge aids recovery of the residual oil film; any dirt is wiped off reliably.
  • in addition, the sealing edge reduces the residual oil film on the side of the me- dium if composite seals on PTFE basis, (e.g. S09), are used (tandem arrangement). in the standard design, pressurisation should be limited to 16 bar.

 

 

area of application: hydraulics/pneumatics

  • reciprocating, swivelling and coiling rods on hydraulic cylinders.
  • push rods and valve stems.
  • (materials must be selected according to operating requirements).
  • industrial vehicles, injection moulding machines, handling equipment, presses, agricultural machinery, mills, control and regulation equipment, large cylinders.

 

function:

WR 15 wipers are designed to keep dust, dirt, sand and metal chips from the sealing and guiding elements, thereby avoiding abrasive dam- age caused by external contamination.

 for detailed information regarding chemical resistance please refer to our “list of resistance”.

 

surface quality

surface roughness Rtmax (μm) Ra (μm)
sliding surface according to seal data
bottom of groove ≤6,3 ≤1,6
groove face ≤15 ≤3

 

tolerance recommendation

seal housing tolerances
L +0,2
ØD H9

 

mode of installation

the prerequisites for perfect functioning are careful fitting and an accurately dimensioned mounting space. in general, wipers snap easily into their housings when distorted into a kidney shape (over 20mm diameter). a large insertion chamfer must be provided (20-30°, length = (D-d)/4).

 

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...

 

fitted:

 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.