Design:
Claron Style PDS rod seal is a 3 piece assembly consisting of a Nitrile Rubber sealing element which is backed up by a tough Thermoplastic elastomer header complete with an Acetal anti-extrusion ring on the I.D. The complete assembly forms a highly robust sealing unit for use in high pressure applications where shock loads and pressure spikes are present. This seal is widely used in the mobile plant industry and is also a modern replacement for common veepac seals.
| Maximum Pressure |
| Max Speed Temp. Range |
| m/s -30°C to 100°C |
| 0.50 325 Bar
0.15 600 Bar |
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 |
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 PDS is designed to be fitted into a split gland as shown in the illustration below. The seal can be supplied split to ease fitting if required. 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 | f8 H9 Js11 +0.25 | Nominal | Min. | Max. | ||||||||
| Ød1 ØG | ØD1 | -0.00 L1 |
Section S |
C | R1 | |||||||
| PDS 169118 | 30 | 43 | 20,0 | 6,5 | 3 | 0,4 | ||||||
| PDS 204157 | 40 | 52 | 22,5 | 6,0 | 3 | 0,4 | ||||||
| PDS 216157 | 40 | 55 | 22,5 | 7,5 | 4 | 0,4 | ||||||
| PDS 248196 | 50 | 63 | 20,0 | 6,5 | 3 | 0,4 | ||||||
| PDS 255196 | 50 | 65 | 22,5 | 7,5 | 4 | 0,4 | ||||||
| PDS 295236 | 60 | 75 | 22,5 | 7,5 | 4 | 0,4 | ||||||
| PDS 175125 | 1,250 | 1,750 | 0,750 | 0,250 | 0,125 | 0,015 | |
| PDS 200150 | 1,500 | 2,000 | 0,748 | 0,250 | 0,125 | 0,015 | |
| PDS 237175 | 1,750 | 2,375 | 1,060 | 0,312 | 0,156 | 0,015 | |
| PDS 250200 | 2,000 | 2,500 | 0,850 | 0,250 | 0,125 | 0,015 | |
| PDS 262200 | 2,000 | 2,625 | 1,000 | 0,312 | 0,156 | 0,015 | |
| PDS 325250 | 2,500 | 3,250 | 1,230 | 0,375 | 0,187 | 0,032 | |
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