Claron Polyseal Single Acting Piston Seal GPW

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Design:

Claron Style GPW is designed for use as a single acting piston seal The seal is a precision moulded Nitrile rubber sealing element with a proportional bonded reinforced NBR header and an acetal bearing ring to resist extrusion. The acetal bearing ring resists extrusion of the seal to allow greater clearances and higher pressures, and provides bearing support for the piston preventing misalignment and metal to metal contact between piston and bore.Style GPW is designed to provide effective low pressure sealing through distortion of the lips rather than “squeeze”. This gives an improved response to pressure variations and reduces low pressure stiction to ensure a smoother return stroke. Style GPW has proven to be effective over a wide range of applications.

These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps.

Refer to Appendix 1 for further information.

NBR Rubber
DIN Hydraulic Fluid Description °C
H Mineral oil without additives 100
H-L Mineral Fluid with anti corrosion and anti ageing additives 100
H-LP Mineral oil as HL plus additives reducing wear, raising load 100
H-LPD Mineral oil as H-LP but with detergents and dispersants 100
H-V Mineral oil as H-LP plus improved viscosity temp. 100
HFA E Emulsions of mineral oil in water. Water content 80-95% 55
HFA S Synthetic oil in water. Water content 80-95% 55
HFB Emulsions of water in mineral oil. Water content 40% 60
HFC Aqueous polymer solutions. Water content 35% 60
HFD R Phosphoric acid ester based NS
HFD S Chlorinated hydrocarbon based NS
HFD T Mixtures of HFD R and HFD S NS
HEPG Polyglycol based NS
HETG Vegetable Oil based 60
HEES Fully synthetic ester based NS

 

Note: Clearance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of -30°C to 100°C The use of a suitably selected Claron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal.

 

Housing:

For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to Appendix 4 for value of tolerance symbols.

Fitting:

Style GPW is designed to be fitted onto a split piston and may be used with Claron Style PSR retainer. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing.

For a detailed checklist, refer to Appendix 3.

Part Number H 10 js 11 js 10           js 11      +0.63           +0.1      Nominal        Min
+0.38           -0.0
Max Max
ØD1 Ød1 Ød2 Ød3 L1 L2 S C R1 R2
GPW 196137 50,00 35,00 43,96 48,10 11,00 6,35 7,50 4,00 0,60 0,20
GPW 196157/1 50,00 40,00 46,43 48,80 10,00 6,35 5,00 2,50 0,40 0,20
GPW 216157/1 55,00 40,00 50,37 53,65 10,50 6,35 7,50 4,00 0,60 0,20
GPW 248188/1 63,00 48,00 58,40 61,65 9,50 6,35 7,50 4,00 0,60 0,20
GPW 248196 63,00 50,00 58,40 61,65 10,00 6,35 6,50 4,00 0,60 0,20
GPW 255188 65,00 48,00 60,40 63,65 12,00 6,35 8,50 4,00 0,60 0,20
GPW 255196 65,00 50,00 60,40 63,65 10,00 6,35 7,50 4,00 0,60 0,20
GPW 275196 70,00 50,00 64,15 68,35 14,00 6,35 10,00 5,00 0,80 0,20
GPW 314236 80,00 60,00 74,15 78,35 14,00 6,35 10,00 5,00 0,80 0,20
GPW 393314 100,00 80,00 94,15 98,35 14,00 6,35 10,00 5,00 0,80 0,20
GPW 433354 110,00 90,00 104,10 108,00 12,50 6,35 10,00 5,00 0,80 0,20
GPW 551472 142,00 120,00 134,15 138,00 12,00 6,35 10,00 5,00 0,80 0,20
ØD1                Ød1 Ød2 Ød3                    L
1
L2                     S C R1 R2
GPW 112062 1.125      0.625 0,986 1.085      0.468 0.250       0.250 0,125 0,015 0,008
GPW 141087 1.417      0.875 1,277 1.375      0.468 0.250       0.271 0,125 0,015 0,008
GPW 150100 1.500      1.000 1,360 1.450      0.375 0.250       0.250 0,125 0,015 0,008
GPW 162100 1.625      1.000 1,445 1.575      0.437 0.250       0.312 0,156 0,025 0,008
GPW 175125 1.750      1.250 1,604 1.698      0.375 0.250       0.250 0,125 0,015 0,008
GPW 178116 1.786      1.161 1,606 1.735      0.468 0.250       0.312 0,156 0,025 0,008
GPW 187125/2 1.875      1.250 1,674 1.825      0.500 0.250       0.312 0,156 0,025 0,008
GPW 200137/1 2.000      1.375 1,820 1.950      0.375 0.250       0.312 0,156 0,025 0,008
GPW 212150 2.125      1.500 1,944 2.075      0.468 0.250       0.312 0,156 0,025 0,008
GPW 225162 2.250      1.625 2,070 2.200      0.437 0.250       0.312 0,156 0,025 0,008
GPW 237175 2.375      1.750 2,194 2.325      0.437 0.250       0.312 0,156 0,025 0,008
GPW 262200 2.625      2.000 2,443 2.571      0.437 0.250       0.312 0,156 0,025 0,008
GPW 275200 2.750      2.000 2,522 2.695      0.437 0.250       0.375 0,187 0,031 0,008
GPW 275200/2 2.750      2.000 2,522 2.695      0.562 0.250       0.375 0,187 0,031 0,008
GPW 275212 2.750      2.125 2,569 2.695      0.468 0.250       0.312 0,156 0,025 0,008
GPW 300225/1 3.000      2.250 2,772 2.935      0.500 0.250       0.375 0,187 0,031 0,008
GPW 325262 3.250      2.625 3,069 3.195      0.562 0.250       0.312 0,156 0,025 0,008
GPW 350275 3.500      2.750 3,271 3.435      0.562 0.250       0.375 0,187 0,031 0,008
GPW 362287 3.625      2.875 3,395 3.560      0.562 0.250       0.375 0,187 0,031 0,008
GPW 400325/1 4.000      3.250 3,770 3.935      0.562 0.250       0.375 0,187 0,031 0,008
GPW 425350/1 4.250      3.500 4,019 4.185      0.562 0.250       0.375 0,187 0,031 0,008
GPW 450375 4.500      3.750 4,229 4.422      0.562 0.250       0.375 0,187 0,031 0,008
GPW 500400 5.000      4.000 4,733 4.920      0.750 0.250       0.500 0,218 0,046 0,015
GPW 600500 6.000      5.000 5,726 5.920      0.750 0.250       0.500 0,218 0,046 0,015
GPW 700600 7.000      6.000 6,724 6.920      0.750 0.250       0.500 0,218 0,046 0,015

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