Design:
Designed for use on split pistons, the seal is a precision moulded rubber element with rubberised fabric reinforcements. Style DPW is fitted with clip on anti-extrusion bearing rings on the O.D. to allow larger machining clearances between the piston head and cylinder bore, and to permit higher working pressures. The Polyacetal bearing rings also support the piston head under side load conditions thus preventing metal to metal contact. The bearing rings are an integral part of the seal therefore react directly to operating pressures thus closing the extrision gap. The seal is designed with sufficient radial sectional interference that on complete assembly low pressure sealing is effected. The supporting rubberised fabric has the capability of retaining the sealing media thus assisting in reducing friction and wear. Style DPW has proven to be effective over a wide range of applications.
Operating conditions:
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 |
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.
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.
+0,36 + 0,1
H11 js11 js10 js11 +0,38 -0,0 Nominal Minimum Maximum Maximum
| ØD1 | Ød1 | Ød2 | Ød3 | L1 | L2 | S | C | R1 | R2 | |||
| DPW 098047 | 25 | 12 | 21.45 | 23.75 | 12 | 6.35 | 6.5 | 2.5 | 0.4 | 0.2 | ||
| DPW 118066 | 30 | 17 | 26.45 | 28.95 | 15 | 6.35 | 6.5 | 2.5 | 0.4 | 0.2 | ||
| DPW 157094 | 40 | 24 | 35.40 | 38.65 | 18 | 6.35 | 8.0 | 4.0 | 0.4 | 0.2 | ||
| DPW 177114 | 45 | 29 | 40.40 | 43.65 | 18 | 6.35 | 8.0 | 4.0 | 0.4 | 0.2 | ||
| DPW 188125 | 48 | 32 | 43.35 | 46.65 | 18 | 6.35 | 8.0 | 4.0 | 0.4 | 0.2 | ||
| DPW 196133 | 50 | 34 | 45.40 | 48.65 | 18 | 6.35 | 8.0 | 4.0 | 0.4 | 0.2 | ||
| DPW 216153/1 | 55 | 39 | 50.40 | 53.65 | 18 | 6.35 | 8.0 | 4.0 | 0.4 | 0.2 | ||
| DPW 236173/1 | 60 | 44 | 55.40 | 58.65 | 18 | 6.35 | 8.0 | 4.0 | 0.4 | 0.2 | ||
| DPW 248185 | 63 | 47 | 58.40 | 61.65 | 19 | 6.35 | 8.0 | 4.0 | 0.4 | 0.2 | ||
| DPW 255196 | 65 | 50 | 60.40 | 63.65 | 18 | 6.35 | 7.5 | 4.0 | 0.6 | 0.2 | ||
| DPW 275196 | 70 | 50 | 64.15 | 68.35 | 22 | 6.35 | 10.0 | 5.0 | 0.8 | 0.2 | ||
| DPW 295216 | 75 | 55 | 69.15 | 73.35 | 22 | 6.35 | 10.0 | 5.0 | 0.8 | 0.2 | ||
| DPW 314236 | 80 | 60 | 74.15 | 78.35 | 22 | 6.35 | 10.0 | 5.0 | 0.8 | 0.2 | ||
| DPW 334255 | 85 | 65 | 79.15 | 83.35 | 22 | 6.35 | 10.0 | 5.0 | 0.8 | 0.2 | ||
| DPW 354275 | 90 | 70 | 84.15 | 88.35 | 22 | 6.35 | 10.0 | 5.0 | 0.8 | 0.2 | ||
| DPW 393295 | 100 | 75 | 93.15 | 98.00 | 22 | 6.35 | 12.5 | 6.5 | 1.2 | 0.4 | ||
| DPW 393314 | 100 | 80 | 94.15 | 98.35 | 25 | 6.35 | 10.0 | 5.0 | 0.8 | 0.2 | ||
| DPW 413314 | 105 | 80 | 98.10 | 103.35 | 22 | 6.35 | 12.5 | 6.5 | 1.2 | 0.4 | ||
| DPW 433334 | 110 | 85 | 103.10 | 108.00 | 25 | 6.35 | 12.5 | 6.5 | 1.2 | 0.4 | ||
| DPW 433334/1 | 110 | 85 | 103.10 | 108.00 | 22 | 6.35 | 12.5 | 6.5 | 1.2 | 0.4 | ||
| DPW 452354 | 115 | 90 | 108.10 | 113.00 | 22 | 6.35 | 12.5 | 6.5 | 1.2 | 0.4 | ||
| DPW 472374 | 120 | 95 | 113.10 | 118.00 | 22 | 6.35 | 12.5 | 6.5 | 1.2 | 0.4 | ||
| DPW 492393 | 125 | 100 | 118.10 | 123.00 | 25 | 6.35 | 12.5 | 6.5 | 1.2 | 0.4 | ||
| DPW 531433 | 135 | 110 | 128.00 | 133.00 | 25 | 6.35 | 12.5 | 6.5 | 1.2 | 0.4 | ||
| DPW 543433 | 138 | 110 | 131.00 | 136.00 | 25 | 6.35 | 14.0 | 7.5 | 1.2 | 0.4 | ||
| DPW 551472 | 140 | 120 | 134.05 | 138.35 | 25 | 6.35 | 10.0 | 5.0 | 0.8 | 0.2 | ||
| DPW 570472 | 145 | 120 | 138.30 | 143.00 | 25 | 6.35 | 10.0 | 5.0 | 0.8 | 0.2 | ||
| DPW 590492 | 150 | 125 | 143.00 | 148.00 | 25 | 6.35 | 12.5 | 6.5 | 1.2 | 0.4 | ||
| DPW 629511 | 160 | 130 | 153.00 | 158.00 | 25 | 6.35 | 15.0 | 7.5 | 1.2 | 0.4 |
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Nominal Dimensions & Machining Tolerances Claron H11 js11 js10 js11 +0.025″ +0.004 Nominal Minimum Maximum +0.015″ -0.000 |
Maximum |
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| ØD1 | Ød1 | Ød2 | Ød3 | L1 | L2 | S | C | R1 | R2 | |||
| DPW 100062 | 1.000 | 0.625 | 0.883 | 0.964 | 0.468 | 0.250 | 0.187 | 0.093 | 0.008 | 0.008 | ||
| DPW 112062 | 1.125 | 0.625 | 0.986 | 1.083 | 0.500 | 0.250 | 0.250 | 0.125 | 0.015 | 0.008 | ||
| DPW 125075 | 1.250 | 0.750 | 1.111 | 1.208 | 0.625 | 0.250 | 0.250 | 0.125 | 0.015 | 0.008 | ||
| DPW 150100 | 1.500 | 1.000 | 1.360 | 1.458 | 0.625 | 0.250 | 0.250 | 0.125 | 0.015 | 0.008 | ||
| DPW 150100/S | 1.500 | 1.000 | 1.360 | 1.458 | 0.625 | 0.188 | 0.250 | 0.125 | 0.015 | 0.008 | ||
| DPW 162112 | 1.625 | 1.125 | 1.485 | 1.583 | 0.625 | 0.250 | 0.250 | 0.125 | 0.015 | 0.008 | ||
| DPW 175112 | 1.750 | 1.125 | 1.570 | 1.698 | 0.750 | 0.250 | 0.312 | 0.156 | 0.025 | 0.008 | ||
| DPW 200137 | 2.000 | 1.375 | 1.820 | 1.948 | 0.750 | 0.250 | 0.312 | 0.156 | 0.025 | 0.008 | ||
| DPW 212150 | 2.125 | 1.500 | 1.944 | 2.074 | 0.750 | 0.250 | 0.312 | 0.156 | 0.025 | 0.008 | ||
| DPW 225162 | 2.250 | 1.625 | 2.069 | 2.197 | 0.750 | 0.250 | 0.312 | 0.156 | 0.025 | 0.008 | ||
| DPW 237175 | 2.375 | 1.750 | 2.194 | 2.322 | 0.750 | 0.250 | 0.312 | 0.156 | 0.025 | 0.008 | ||
| DPW 250187 | 2.500 | 1.875 | 2.319 | 2.446 | 0.750 | 0.250 | 0.312 | 0.156 | 0.025 | 0.008 | ||
| DPW 250187/1 | 2.500 | 1.875 | 2.302 | 2.437 | 0.937 | 0.250 | 0.312 | 0.156 | 0.025 | 0.008 | ||
| DPW 262200 | 2.625 | 2.000 | 2.443 | 2.571 | 0.750 | 0.250 | 0.312 | 0.156 | 0.025 | 0.008 | ||
| DPW 275200 | 2.750 | 2.000 | 2.522 | 2.685 | 0.937 | 0.250 | 0.375 | 0.187 | 0.031 | 0.008 | ||
| DPW 300225 | 3.000 | 2.250 | 2.772 | 2.935 | 0.937 | 0.250 | 0.375 | 0.187 | 0.031 | 0.008 | ||
| DPW 300225/1 | 3.000 | 2.250 | 2.772 | 2.935 | 1.125 | 0.250 | 0.375 | 0.187 | 0.031 | 0.008 | ||
| DPW 312237 | 3.125 | 2.375 | 2.896 | 3.060 | 0.937 | 0.250 | 0.375 | 0.187 | 0.031 | 0.008 | ||
| DPW 325250 | 3.250 | 2.500 | 3.021 | 3.184 | 0.937 | 0.250 | 0.375 | 0.187 | 0.031 | 0.008 | ||
| DPW 350275 | 3.500 | 2.750 | 3.271 | 3.434 | 0.937 | 0.250 | 0.375 | 0.187 | 0.031 | 0.008 | ||
| DPW 375300 | 3.750 | 3.000 | 3.520 | 3.683 | 0.937 | 0.250 | 0.375 | 0.187 | 0.031 | 0.008 | ||
| DPW 387312 | 3.875 | 3.125 | 3.646 | 3.809 | 0.937 | 0.250 | 0.375 | 0.187 | 0.031 | 0.008 | ||
| DPW 400325 | 4.000 | 3.250 | 3.770 | 3.933 | 0.937 | 0.250 | 0.375 | 0.187 | 0.031 | 0.008 | ||
| DPW 425350 | 4.250 | 3.500 | 4.019 | 4.182 | 0.937 | 0.250 | 0.375 | 0.187 | 0.031 | 0.008 | ||
| DPW 450350 | 4.500 | 3.500 | 4.229 | 4.422 | 1.250 | 0.250 | 0.500 | 0.218 | 0.046 | 0.015 | ||
| DPW 450350/1 | 4.500 | 3.500 | 4.229 | 4.422 | 1.500 | 0.250 | 0.500 | 0.218 | 0.046 | 0.015 | ||
| DPW 475375 | 4.750 | 3.750 | 4.478 | 4.671 | 1.250 | 0.250 | 0.500 | 0.218 | 0.046 | 0.015 | ||
| DPW 500400 | 5.000 | 4.000 | 4.728 | 4.921 | 1.250 | 0.250 | 0.500 | 0.218 | 0.046 | 0.015 | ||
| DPW 525425 | 5.250 | 4.250 | 4.977 | 5.170 | 1.250 | 0.250 | 0.500 | 0.218 | 0.046 | 0.015 | ||
| DPW 550450 | 5.500 | 4.500 | 5.227 | 5.420 | 1.250 | 0.250 | 0.500 | 0.218 | 0.046 | 0.015 | ||
| DPW 550450/2 | 5.500 | 4.500 | 5.232 | 5.437 | 1.500 | 0.370 | 0.500 | 0.218 | 0.046 | 0.015 | ||
| DPW 575475 | 5.750 | 4.750 | 5.475 | 5.669 | 1.250 | 0.250 | 0.500 | 0.218 | 0.046 | 0.015 | ||
| DPW 600500 | 6.000 | 5.000 | 5.726 | 5.919 | 1.250 | 0.250 | 0.500 | 0.218 | 0.046 | 0.015 | ||
| DPW 650550 | 6.500 | 5.500 | 6.226 | 6.419 | 1.250 | 0.250 | 0.500 | 0.218 | 0.046 | 0.015 | ||
| DPW 700600 | 7.000 | 6.000 | 6.724 | 6.917 | 1.250 | 0.250 | 0.500 | 0.218 | 0.046 | 0.015 | ||
| DPW 800700 | 8.000 | 7.000 | 7.723 | 7.915 | 1.250 | 0.250 | 0.500 | 0.218 | 0.046 | 0.015 | ||
| DPW 950850 | 9.500 | 8.500 | 9.225 | 9.418 | 1.250 | 0.250 | 0.500 | 0.218 | 0.046 | 0.015 | ||
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