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Gate valve rubber polypak seal
gate valve polypak seal gate valve polypak seal gate valve polypak seal

Gate valve rubber polypak seal

The ESA valve rubber seal is a type of Polypak, it combines a rubber o-ring type and a conventional lip type seal to produce a unique sealing device.

  • Brand:

    JST Seals

  • Item NO.:

    ESA

  • Payment:

    T/T

  • Product Origin:

    China

  • Shipping Port:

    Guangzhou

  • Order(MOQ):

    50
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  • Product Detail

Gate valve rubber polypak seal

 

Polypak is an extruded seal with a symmetrical profile and can be used in rod or piston applications. Its rectangular cross-section ensures the stability of the gland and is an economic choice for use as a separate seal or with a buffer seal.

 
The ESA valve stem seals a type of Polypak, it combines a rubber o-ring type and a conventional lip type seal to produce a unique sealing device. The O-ring exciter acts as an energizer to maintain seal contact under low pressure or vacuum applications. The inclined lip design of polypak is very suitable for cutting liquid films.
 
The range of materials available to the user of the ESA seal insures the proper combination for abrasion, extrusion, temperature resistance and fluid compatability which produces high sealability and long life.
 
Loaded U-cups were primarily designed for dynamic reciprocating applications. The O-rings loader makes this seal excellent for low-pressure rod and piston applications. With loaded U-cups as the system pressure increases, so does the force on the loading lips. Sealing force automatically compensates for the higher pressure, maintaining a positive seal.

Advantages:

1.Normally used for low pressure valve stem
2.Excellent sealing performance
3.High friction
4.High torque
5.Cost-effective
6.High wear resistance
7.High sealability

 

Working Conditions
Working Pressure Working Temperature Working Medium Material
0~15000 PSI PU Hydraulic fluids, crude oil, sour oil/gas, H2S, salty water
NBR/HNBR/FKM

 

Gate valve polypak seal dimensions :

Inch MM   Inch MM
d D H d D H d D H d D H
0.71 1.26 0.31 18 32 8 1.26 2.05 0.39 32 52 10
0.79 1.38 0.39 20 35 10 1.38 2.17 0.39 35 55 10
0.87 1.38 0.39 22 35 10 1.42 2.05 0.39 36 52 10
0.98 1.50 0.24 25 38 6 1.5 2.24 0.39 38 57 10
0.98 1.77 0.39 25 45 10 1.5 2.25 0.39 38.1 57.1 10
1.00 1.50 0.25 25.4 38.1 6.3 1.5 1.75 0.25 38.1 44.5 6.3
1.02 1.57 0.39 26 40 10 1.57 2.36 0.39 40 60 10
1.10 1.65 0.39 28 42 10 1.77 2.56 0.39 45 65 10
1.10 1.73 0.39 28 44 10 1.81 2.56 0.39 46 65 10
1.10 1.89 0.39 28 48 10 1.97 2.76 0.39 50 70 10
1.18 1.97 0.39 30 50 10 2.17 2.95 0.39 55 75 10
1.22 1.73 0.39 31 44 10 2.36 3.15 0.39 60 80 10
1.25 2.00 0.39 31.7 50.7 10 2.56 3.35 0.39 65 85 10
1.26 1.89 0.39 32 48 10.0 MAX 1000

Hot Tags :

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