description
the seal profile of the PS08-AQ5 has been redesigned on both the dynamic and static seal- ing surface. two O-rings are used to energize the seal instead of one.
the PS08-AQ5 combines the benefits of a low-friction PTFE filled slipper seal with the high sealing characteristics of an elastomeric seal by incorporating a limited foot print X- ring seal in the dynamic sealing face. this optimizes leakage control while minimizing friction.
the particular characteristics of the PS08-AQ5 are the special seal profile with a defined seal edge and the use of two O-Rings as energizing elements to optimize the pressure profile and to reduce the force of attack at gas permeability.
application
not bolded symbols; please consult our technical for application limitations
description
the seal profile of the PS08-AQ5 has been redesigned on both the dynamic and static seal- ing surface. two O-rings are used to energize the seal instead of one.
the PS08-AQ5 combines the benefits of a low-friction PTFE filled slipper seal with the high sealing characteristics of an elastomeric seal by incorporating a limited foot print X- ring seal in the dynamic sealing face. this optimizes leakage control while minimizing friction.
the particular characteristics of the PS08-AQ5 are the special seal profile with a defined seal edge and the use of two O-Rings as energizing elements to optimize the pressure profile and to reduce the force of attack at gas permeability.
category of profile
machined or molded/standard/trade product.
double acting
the PS08-AQ5 seal is designed for use as a piston seal.
area of application: hydraulics
the PS08-AQ5 is the recommended sealing element for double acting pistons of accumulators and positioning and holding cylinders for:
- machine tools
- presses
- rolling mills
- off shore
- accumulators
- heavy duty suspension cylinders
it is particularly recommended for heavy duty and large diameter applications. media: for all common hydraulic fluids, including bio-oils and gases
advantages
- high sealing effect in applications requiring media separation, e.g. fluid/fluid or fluid/gas.
- double security through the combination of low-friction special materials with elastomer seals.
- low gas permeation rate.
- outstanding sliding properties, no stick-slip effect.
operating parameters & material for standard application:
for hydraulic components in mineral oils or medium with good lubricating performance.
standard material for hydraulics, high compressive strength, good sliding and wear properties, good extrusion resistance, BAM tested. mating surface material: steel tubes, steel hardened cast iron.
colour: greyish to dark brown.
operating parameters & material for special application:
for special applications requiring other material combinations, please contact our technical department for further information.
for all lubricating and non-lubricating hydraulic fluids, hydraulic oils without zinc, water hydraulic, soft mating surfaces. surface texture not suit- able for gases.
mating surface material: steel, cast iron, stainless steel, aluminium, bronze, alloys. colour: grey.
operating parameters & material for standard application:
for hydraulic components in mineral oils or medium with good lubricating performance.
for oil hydraulic and pneumatic for all lubricating and non-lubricating fluids, high extrusion resistance, good chemical resistance, BAM tested mating surface material: steel, stainless steel.
colour: black.
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.
1 pressure ratings are dependent on the size of the extrusion gap.
2 attention: not suitable for mineral oils!
gap dimension
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.
1 at pressures > 30 MPa use diameter tolerance H8/f8 (bore/piston) in area of the seal.
surface quality
| surface roughness | material |
Rtmax (μm) |
Rz DIN [µm] |
Ra (μm) |
| mating surface | PTFE + …… | 0.63 – 2.50 | 0.40 – 1.60 | 0.05 – 0.20 |
| PU & Rubber | 1.00 – 4.00 | 0.63 – 2.50 | 0.10 – 0.40 | |
| groove surface | < 16 | < 10.0 | < 1.6 | |
tolerance recommendation
| seal housing | tolerances |
| Ød | h9 |
| 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.