Parker Piston Seals Z7

The Z7 pneumatic piston seal is a U-ring with an integral guiding surface for single-acting pistons, ensuring high sealing performance due to the seal lip design.

  • Due to application-optimized geometry and compounds suitable for use in oiled as well as in oil-free air (after initial lubrication on assembly).
  • Multi-functional sealing element. The guiding area at the sealing element performs the guiding function in the cylinder. However, due to its geometry, the sealing element is not suitable for the absorption of high radial forces or long strokes.
  • Prevents metallic contact between the piston and cylinder. Ideal for light-metal and plastic cylinders (ridging).
  • Good wear resistance.
  • Smooth running due to the optimum lubricant-retaining sealing lip geometry.
  • Easier installation.
  • Assembly on the one-part piston is possible.
  • High-temperature resistance in case of suitable compound selection.
  • Excellent media resistance in case of suitable compound selection.
  • Installation in open housings with retaining collar.

Range of application

Operating pressure ≤ 16 bar
Operating temperature -30 °C to +80 °C
Sliding speed ≤ 1 m/s
Media Compressed air, both lubricated and oil-free (after greasing for fitting)

 Compounds

Standard: N3578, NBR Compound (≈ 75 Shore A).

For low temperatures: N8602, NBR Compound (≈ 70 Shore A). For high temperatures: V3681, FKM Compound (≈ 80 Shore A).

Installation

The profile Z7 pneumatic cylinder seals can be easily mounted by pulling them over the one-piece piston.

Care should be taken that all edges are chamfered to avoid seal damage.

D d H L Order code
16 10 8 9,5 Z71610N3578
18 12 8 9,5 Z71812N3578
20 14 8 9,5 Z72014N3578
25 18 9 9,5 Z72518N3578
28 22 8 9,5 Z72822N3578
30 23 9 10 Z73023N3578
32 25 9 10 Z73225N3578
35 28 9 10 Z73528N3578
40 33 9 10 Z74033N3578
45 38 9 10 Z74538N3578
50 43 9 10 Z75043N3578
54 46 10 11 Z75446N3578
63 53 13 14,5 Z76353N3578
63 56 9 10 Z76356N3578
70 62 10 11 Z77007N3578
80 72 10 11 Z78067N3578
80 70 14 15,5 Z78070N3578
100 88 16,5 18 Z7A088N3578
100 90 12 13,5 Z7A089N3578

Brand

Parker