Composite sealing washer Prädifa series WZ | Product Series

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Inside Diameter (mm)

Outside Diameter (mm)

Element Height (mm)

Minimum Working Temperature (C)

Maximum Working Temperature (C)

Seal Material

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Composite sealing washer Prädifa series WZ Composite sealing washer Prädifa series WZ

Composite sealing washer Prädifa series WZ

Where to Buy

Composite sealing washer for high-pressure applications, with self-centering function.

Technical Specifications

  • Media: Hydraulic
  • Polymer Material Options: Hydrogenated Nitrile Butadiene Rubber (HNBR, HSN), Nitrile Butadiene Rubber (NBR, XNBR), Fluorocarbon Rubber (FKM, FPM), Ethylene Propylene Rubber (EPM, EPR, EPDM)
  • Maximum Operating Pressure: 1000 bar, 1500 bar, 1250 bar, 1130 bar, 1550 bar, 1330 bar, 1350 bar, 1260 bar, 1150 bar, 1510 bar, 1400 bar, 1275 bar, 1060 bar, 900 bar, 1050 bar, 810 bar, 860 bar, 690 bar, 950 bar, 700 bar, 680 bar
  • Minimum Operating Temperature: -50 to -20 °C
  • Maximum Operating Temperature: 100 to 200 °C
  • Maximum Surface Speed: 0 m/sec
  • Unit of Measure: Length: mm
  • Cushioning Mechanism: No
  • Thermal Application Type: Standard Moderate Temperature (-35 to 100°C), High Temperature (< 205°C)
  • Pressure Rating: Extremely High Pressure (> 500 bar)
Safety Warning

Full Product Description

The WZ composite sealing washer consists of a metal washer with a rectangular cross section and an elastomer sealing lip with a trapezoidal cross section that is vulcanized to the inside. It is a further development of the WX series and has an additional self-centering function. The WZ composite sealing washer has been designed to replace copper washers in high-pressure systems and is a time-tested and low-cost solution for screw head and flange sealing areas. The elastomer sealing lip is chemically bonded to the metal carrier.
The seal has been designed for use in high-pressure applications and can far exceed the sealing effect of copper washers or similar metal seals. Assembly is self-centering and directionally independent.

Range of application
Static sealing of flanges or screw heads.

Related Documents

Literature and Reference Materials
Composite Sealing Washers--PTD3358
Composite sealing washer WZ--PTD3358
Contact & Support Information
Application Data Sheet (ADS)
Product Demos & Tutorials
How to Properly Store and Clean Elastomer Seals
Mixing the right ingredients: Material Development at Parker-Prädifa
Parker Final Exam in Physics / Sealing Systems Put to the Test
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Products Inside Diameter (mm) Outside Diameter (mm) Element Height (mm) Minimum Working Temperature (C) Maximum Working Temperature (C) Seal Material
WZ0014Z5400 8.64 14.22 1.22 -20 150 Z5400
WZ0316Z5170 10.37 15.88 2.03 -30 100 Z5170
WZ0316Z5172 10.37 15.88 2.03 -20 200 Z5172
WZ0407Z5170 4.5 7 1 -30 100 Z5170
WZ0407Z5172 4.5 7 1 -20 200 Z5172
WZ0509Z5171 5.7 9 1 -20 150 Z5171
WZ0509Z5194 5.7 9 1 -20 200 Z5194
WZ0509Z5231 5.7 9 1 -30 100 Z5231
WZ0510Z5170 5.7 10 1 -30 100 Z5170
WZ0510Z5172 5.7 10 1 -20 200 Z5172
WZ0610Z5170 6.7 10 1 -30 100 Z5170
WZ0610Z5173 6.7 10 1 -50 150 Z5173
WZ0611Z5171 6.7 11 1 -20 150 Z5171
WZ0621Z5170 13.74 20.57 2.03 -30 100 Z5170
WZ0621Z5172 13.74 20.57 2.03 -20 200 Z5172
WZ0813Z5170 8.7 13 1 -30 100 Z5170
WZ0813Z5398 8.7 13 1 -30 100 Z5398
WZ0813Z5399 8.7 13 1 -30 100 Z5399
WZ0813Z5403 8.7 13 1 -30 100 Z5403
WZ1015Z5170 10.35 15.88 2 -30 100 Z5170
WZ1016Z5398 10.7 16 1.5 -30 100 Z5398
WZ1016Z5419 10.7 16 1.5 -30 100 Z5419
WZ1016Z5421 10.7 16 1.5 -20 200 Z5421
WZ1024Z5173 17.28 23.8 2.03 -50 150 Z5173
WZ1218Z5419 12.7 18 1.5 -30 100 Z5419
WZ1218Z5421 12.7 18 1.5 -20 200 Z5421
WZ1329Z5170 23.01 28.58 2.5 -30 100 Z5170
WZ1329Z5172 21.54 28.58 2.5 -20 200 Z5172
WZ1329Z5173 21.54 28.58 2.5 -50 150 Z5173
WZ1422Z5398 14.7 22 1.5 -30 100 Z5398
WZ1422Z5419 14.7 22 1.5 -30 100 Z5419
WZ1422Z5421 14.7 22 1.5 -20 200 Z5421
WZ1623Z5170 23.49 31.75 2.5 -30 100 Z5170
WZ1623Z5172 23.49 31.75 2.5 -20 200 Z5172
WZ1624Z5412 16.7 24 1.5 -20 200 Z5412
WZ1624Z5419 16.7 24 1.5 -30 100 Z5419
WZ1624Z5421 16.7 24 1.5 -20 200 Z5421
WZ1625Z5172 16.3 24 1.5 -20 200 Z5172
WZ1826Z5419 18.7 26 1.5 -30 100 Z5419
WZ1826Z5421 18.7 26 1.5 -20 200 Z5421
WZ1935Z5170 27.05 34.93 2.5 -30 100 Z5170
WZ1935Z5172 27.05 34.93 2.5 -20 200 Z5172
WZ1935Z5173 27.05 34.93 2.5 -50 150 Z5173
WZ2028Z5399 20.7 28 1.5 -30 100 Z5399
WZ2028Z5419 20.7 28 1.5 -30 100 Z5419
WZ2028Z5421 20.7 28 1.5 -20 200 Z5421
WZ2230Z5419 22.7 30 2 -30 100 Z5419
WZ2230Z5421 22.7 30 2 -20 200 Z5421
WZ2238Z5172 30.81 38.1 2.5 -20 200 Z5172
WZ2432Z5419 24.7 32 2 -30 100 Z5419
WZ2432Z5421 24.7 32 2 -20 200 Z5421
WZ2543Z5171 33.89 42.8 2.5 -20 150 Z5171
WZ2543Z5172 33.89 42.8 2.5 -20 200 Z5172
WZ3039Z5170 31 39 2 -30 100 Z5170
WZ3039Z5172 31 39 2 -20 200 Z5172
WZ3252Z5172 42.93 52.38 2.5 -20 200 Z5172
WZ3859Z5172 48.44 58.6 2.5 -20 200 Z5172
WZ4470Z5172 54.89 68.85 3.38 -20 200 Z5172
WZ4558Z5403 48.44 58.6 2.5 -30 100 Z5403
WZ5173Z5171 60.58 73.03 2.5 -20 150 Z5171
WZ5173Z5172 60.58 73.03 2.5 -20 200 Z5172
WZ6490Z5170 76.08 90.17 3.38 -30 100 Z5170
WZ6490Z5172 76.08 90.17 3.38 -20 200 Z5172
WZ0316Z5419 15.88 10.37 2.03 -30 100 Z5419
WZ0407Z5419 4.5 7 1 -30 100 Z5419
WZ0610Z5419 6.7 10 1 -30 100 Z5419
WZ0621Z5419 20.57 13.74 2.03 -30 100 Z5419
WZ1024Z5419 23.8 17.28 2.03 -30 100 Z5419
WZ2238Z5419 38.1 20.81 2.5 -30 100 Z5419
WZ2543Z5419 42.8 33.89 2.5 -30 100 Z5419
WZ2635Z5419 35 26.7 2 -30 100 Z5419
WZ3039Z5419 39 31 2 -30 100 Z5419
WZ3252Z5419 52.38 42.93 2.5 -30 100 Z5419
WZ3859Z5419 58.6 48.44 2.5 -30 100 Z5419
WZ5173Z5419 73.03 60.58 2.5 -30 100 Z5419
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