Pneumatic Seals
description
as profile WR 01, but without back support area. for housings according ISO 6195 - Type A.
- 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 design of the wiping lip, with its extremely rounded outline, aids to maintain the initial lubricating 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: pneumatics
- reciprocating rods on pneumatic cylinders.
- push rods and valve stems.
- (materials must be selected according to operating requirements).
- the profile is not suited for mounting space according to ISO 6195-1986 type A. Design
function
WR 01 pneumatic wipers are designed to keep dust, dirt, sand and metal chips away from the sealing and guiding elements, thereby avoid- ing abrasive damage caused by external contamination.
operating parameters
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 |
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 < 10 mm | 0.2 |
| L ≥ 10 mm | 0.3 |
| D1 | H11 |
| D | H11 |
| cs | R [mm] |
| ≤ 5 | max. 0,3 |
| >5.......≤ 7,5 | max. 0,4 |
| >7,5....≤ 10 | max. 0,6 |
| > 10 | max. 0,8 |
the L1 measurement, which is dependent on the height of the wiper, is selected as follows:
| H [mm] | L1 [mm] |
| ≤ 7 | 1 |
| 10 | 1.5 |
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). when mounted in cylinders that cannot be dismantled, the rings can also be cut open. in such cases, an approx. 2-3% larger diameter should be chosen.
when the wiper is installed, the two ends are snapped into place first, and then the entire ring is pressed in along the entire circumference. no gluing of the joining ends is required.
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...
not suitable for wiper housings according to ISO 6195/A
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
wiper to fit in angled housings (30°angle). design mainly used in british equipment, in inch as well as metric dimensions.
- no special holding systems are required for installation. the rings snap into grooves and do not require a precision fit.
- the design of the wiping edge aids recovery of the residual oil film; any dirt is wiped off reliably.
- this design is used in english machines in particular and is common in both imperial and metric dimensions.
- special housing designs required (angel on groove face= 30°).
- 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 only.
single acting
area of application: hydraulics
- reciprocating rods on hydraulic cylinders.
- push rods and valve stems.
- (materials must be selected according to operating requirements).
function
WR 04-B wipers are designed to keep dust, dirt, sand and metal chips away from the sealing and guiding elements, thereby avoiding abra- sive 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 |
mode of installation
the prerequisites for perfect functioning are careful fitting and an accurately dimensioned mounting space. in general, wipers snap easily into their mountings when distorted into a kidney shape (over 20mm diameter).
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.
description
wiper with interference fit on outside diameter, providing a technically accurate closure at the cylinder. special design of wiping lip allows retention of initial lubricating film. back support area prevents tilting of wiper. for housings according ISO 6195 - Type A.
- 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 design of the wiping lip, with its extremely rounded outline, aids to maintain the initial lubricating film; any dirt is wiped off reliably.
- the provision of a support shoulder, along with relief grooves on the matingseal face, prevents tilting of the wiper and pressure build up on the trailing side, which is to be avoided if possible.
application
not bolded symbols; please consult our technical for application limitations
category of profile
machined only.
single acting
area of application: pneumatics
- reciprocating rods on pneumatic cylinders.
- push rods and valve stems.
- (materials must be selected according to operating requirements).
- the profile is suited for mounting space according to ISO 6195-1986 type A.
function
WR 04-A pneumatic wipers are designed to keep dust, dirt, sand and metal chips away from the sealing and guiding elements, thereby avoiding 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 < 10 mm | 0.2 |
| L ≥ 10 mm | 0.3 |
| D1 | H11 |
| D | H11 |
| cs | R [mm] |
| ≤ 5 | max. 0,3 |
| >5.......≤ 7,5 | max. 0,4 |
| >7,5....≤ 10 | max. 0,6 |
| > 10 | max. 0,8 |
the L1 measurement, which is dependent on the height of the wiper, is selected as follows:
| H [mm] | L1 [mm] |
| ≤ 7 | 1 |
| 10 | 1.5 |
| 13 | 2 |
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). when mounted in cylinders that cannot be dismantled, the rings can also be cut open. in such cases, an approx. 2-3% larger diameter should be chosen.
when the wiper is installed, the two ends are snapped into place first, and then the entire ring is pressed in along the entire circumference. no gluing of the joining ends is required.
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...
suitable for wiper housing according to ISO 6195/A.
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
wiper to fit in angled housings (30°angle). design mainly used in british equipment, in inch as well as metric dimensions.
- no special holding systems are required for installa the rings snap into grooves and do not require a precision fit.
- the design of the wiping edge aids recovery of the residual oil film; any dirt is wiped off reliably.
- this design is used in english machines in particular and is common in both imperial and metric dimensions.
- special housing designs required (angel on groove face= 30°).
- 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 only.
single acting
area of application: hydraulics
- reciprocating rods on hydraulic cylinders.
- push rods and valve stems.
- (materials must be selected according to operating requirements).
function
WR04 wipers are designed to keep dust, dirt, sand and metal chips away from the sealing and guiding elements, thereby avoiding abra- sive damage caused by external contamination.
operating parameters & material
|
material |
temperature |
max. surface speed |
hydrolysis |
dry running |
wear resistance |
|
PU |
-30 °C ... +110 °C |
4 m/s |
- |
+ |
++ |
|
HPU |
-20 °C ... +110 °C |
4 m/s |
++ |
+ |
++ |
|
LTPU |
-50 °C ... +110 °C |
4 m/s |
- |
+ |
++ |
|
SPU |
-20 °C ... +110 °C |
5 m/s |
++ |
++ |
++ |
|
GPU |
-30 °C ... +110 °C |
4 m/s |
++ |
+ |
++ |
|
NBR |
-30 °C ... +100 °C |
4 m/s |
- |
- |
O |
|
FKM |
-20 °C ... +200 °C |
4 m/s |
- |
- |
O |
|
EPDM2 |
-50 °C ... +150 °C |
4 m/s |
++ |
- |
O |
|
HNBR |
-25 °C ... +150 °C |
4 m/s |
+ |
O |
+ |
|
XPU |
-30 °C ... +110 °C |
4 m/s |
|
|
|
|
HPU-D57 |
-20 °C ... +110 °C |
4 m/s |
|
|
|
|
SPU-D57 |
-20 °C ... +110 °C |
5 m/s |
|
|
|
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.
2 attention: not suitable for mineral oils!
++ ... particularly suitable o ... conditional suitable
+ ... suitable - ... not suitable
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 |
mode of installation
the prerequisites for perfect functioning are careful fitting and an accurately dimensioned mounting space. in general, wipers snap easily into their mountings when distorted into a kidney shape (over 20mm diameter).
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.
description
WR 05 with chamfer, wiper usually fixed in housing with clamp flange. mainly used for replacement in old hydraulic and pneumatic cylinders or for secondary applications.
- in most cases the wipers are retained by the use of clamp rings. they are mainly used as replacement parts in old pneumatic and hydraulic cylinders and, to a lesser extent, as push rod sealing in water hydraulic applications.
- the design of the wiping edge aids recovery of the residual oil film; any dirt is wiped off reliably.
- pressure build-up 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: pneumatics
- reciprocating rods on pneumatic cylinders.
- push rods and valve stems.
- (materials must be selected according to operating requirements).
function
WR 05 pneumatic wipers are designed to keep dust, dirt, sand and metal chips away from the sealing and guiding elements, thereby avoid- ing abrasive damage caused by external contamination.
operating parameters
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 |
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 |
| d | according to seal data |
| D1 | H11 |
| D | H11 |
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). when mounted in cylinders that cannot be dismantled, the rings can also be cut open. in such cases, an approx. 2-3% larger diameter should be chosen.
when the wiper is installed, the two ends are snapped into place first, and then the entire ring is pressed in along the entire circumference. no gluing of the joining ends is required.
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...
not suitable for wiper housings according to ISO 6195/A
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
combination wiper seal without metal reinforcement with special pneumatic sealing edge. combines three functions: sealing, wiping, fixing.
application
category of profile
molded/standard/trade product or machined with minor design change.
double acting
area of application: pneumatic
- rod seal e.g. for ISO cylinders.
- media: lubricated air as well as dry air and oil-free air (after initial lubrication on assembly).
advantages
- combination seal with minimal space requirements, which seals inwards and wipes outwards.
- the component needs no additional element (circlip) for axial fixing within the housing.
- long service life.
- robust design.
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 |
| ØD | H11 |
| ØD1 | H11 |
| [mm] | [mm] | [mm] | |
| Ød | .....<20 | 20<....<50 | ....>50 |
| R | 1.1 | 1.4 | 1.8 |
fitting & installation
careful fitting is a prerequisite for the correct function of the seal. the combination seal A65 is pressed into the housing from outside. the bead on the outside diameter snaps into the circlip groove and fixes the seal in the housing.
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.