P18-1.75-31B
P Urethane U-Seal, 1-3/4 X 2-1/8 X 5/16, Type B Style
Brand: HPSI
HPSI
The P Polyseals are molded from abrasion-resistant 93A polyurethane and designed for reliable hydraulic sealing in dynamic applications. A four-lobed expander ring energizes the sealing lips, even at zero pressure, helping prevent leakage when the system is idle. Optional SKF® 93A high-temperature urethane and SKF® 95A premium urethane materials are available for demanding operating conditions.
The Type B profile shares the same rectangular dimensions as the Deep profile but features a Type B beveled sealing lip. The beveled lip provides improved oil film breaking while retaining the deeper profile geometry.
Typical Part Number: P25-2.50-37B
| Cross Section | : | 3/16 in |
| Height | : | 5/16 in |
| Inside Diameter | : | 1-3/4 in |
| Lip Style | : | Type B |
| Material | : | Urethane/Nitrile |
| Outside Diameter | : | 2-1/8 in |
| Part Number | : | (Prefix)(C/S)-(ID)-(H) |
| Pressure Range | : | 0 TO 5,000 PSI |
| Temperature Range | : | -65° to 220°F |
- Rectangular profile fits deeper seal gland configurations
- Type B beveled sealing lip improves oil film breaking
- Four-lobed expander ring maintains sealing at zero pressure
- Helps reduce leakage while the hydraulic system is idle
- Abrasion-resistant 93A polyurethane delivers long-lasting performance
