Parker Piston Seals Z8 NBR

The Z8 cylinder seal is a single-acting U-ring for pistons in pneumatic cylinders and valves. It is characterized by small axially installed dimensions. The standard range of the Z8 product series conforms to the cylinder diameters acc. to ISO 3320 and CETOP RP 52 P, RP 43 P, and RP 53 P. The Z8 product series is available in both Ultrathan® and rubber compounds. The Ultrathan® versions are characterized by extremely high resistance against wear and pressure peaks.

  • Due to application-optimized geometry and compounds suitable for use in oiled as well as in oil-free air (after initial lubrication on assembly).
  • Good sealing performance in extremely small assembly conditions.
  • Good wear resistance.
  • Low static and dynamic friction thanks to the miniaturized design.
  • Smooth running due to optimum lubricant-retaining sealing lip geometry.
  • Easier installation.
  • High-temperature resistance in case of suitable compound selection.
  • Excellent media resistance in case of suitable compound selection.
  • Installation in closed and undercut housings.

Range of application

Operating pressure ≤ 16 bar
Operating temperature -20 °C to +80 °C
Sliding speed ≤ 1 m/s
Media Compressed air, both lubricated and oil-free (after greasing for fitting)

 Compounds

Standard: N3580, a special NBR-based SFR® elastomer (≈ 80 Shore A). This compound offers excellent running properties, especially in the semi-frictional area.

for low temperatures: N8602, NBR compound (≈ 70 Shore A) for high temperatures: V8550, FKM compound (≈ 80 Shore A)

Installation

Profile Z8 piston seals can be easily mounted into the grooves by simply pulling them over the piston. To avoid damaging the seal’s sharp edges should be removed from the piston and the cylinder tube.

For oil-free operating conditions, it is important to obtain a full lubrication film inside the cylinder tube before assembly to ensure the long service life of the seal.

For piston guidance, we recommend our profile F2 piston guidance tape. For dimensions of pistons and clearances, please refer to our profile F2.

D d H L Order code D d H L Order code
4 1,5 1,5 2 Z80415N3580 52 42 4,25 4,5 Z85205N3580
5 2,5 1,5 2 Z80504N3580 57 50,5 3,25 3,5 Z85705N3580
6 3 2 2,5 Z80630N3580 58 48 4,25 4,5 Z85816N3580
7,5 4,9 2 2,5 Z80750N3580 63 53 4,25 4,5 Z86353N3580
8 4 2,55 3 Z80804N3580 80 70 4,25 4,5 Z88070N3580
8 4,8 2,3 2,7 Z80806N3580 90 80 4,25 4,5 Z89080N3580
8 5,45 2,3 2,8 Z80810N3580 100 90 4,25 4,5 Z8A090N3580
10 3 3,5 4 Z81003N3580 125 105 8,25 8,5 Z8C505N3580
10 6 2,55 3 Z81006N3580 150 130 8,25 8,5 Z8F113N3580
11 6 2,55 3 Z81106N3580 160 140 8,25 8,5 Z8G014N3580
12 7 2,55 3 Z81207N3580 200 180 8,25 8,5 Z8L018N3580
13 8 2,55 3 Z81030N3580
14 8 2,55 3 Z81421N3580
15 9 2,55 3 Z81509N3580
16 10 2,55 3 Z81610N3580
16 11 2,55 3 Z81611N3580
18 12 2,55 3 Z81812N3580
20 14 2,55 3 Z82014N3580
21 15 2,55 3 Z82115N3580
22 16 2,55 3 Z82216N3580
24 18 3,25 3,5 Z82418N3580
25 19 3,25 3,5 Z82519N3580
28 22 3,25 3,5 Z82822N3580
30 22 3,25 3,5 Z83022N3580
30 22,5 4,8 5,2 Z83023N3580
32 24 3,25 3,5 Z83224N3580
35 27 3,25 3,5 Z83527N3580
36 28 3,25 3,5 Z83628N3580
37 29 3,25 3,5 Z83729N3580
38 30 3,25 3,5 Z83818N3580
40 32 3,25 3,5 Z84032N3580
42 34 3,25 3,5 Z84234N3580
45 37 3,25 3,5 Z84522N3580
50 42 3,25 3,5 Z85042N3580

Brand

Parker