ASHP2
Superior medium-pressure double-lip oil seal
Medium-pressure double-lip oil seal with integrated seal lip support.
Flexible lip design offers better shaft-following ability and reduced lip load over standard seal designs. The premium low-friction Duralast™ material dynamic seal lip reduces friction, heat build-up, and wear. The secondary lip serves as both an effective protection against airside contaminants and as a lube retainer. Maximum service life can be achieved by applying a suitable lubricant between the two sealing lips. The integrated seal lip support allows the seal to handle higher operating pressure. The low friction Duralast™ materials allow a high surface speed. The rubber-covered OD of the seal creates a tight seal with the housing bore. Able to accommodate press-in fitment in housings with short axial length.
| Material | Continuous Pressure | Max. Pressure Spike | Temperature | Surface Speed | Dry-run | PV-Rating |
|---|---|---|---|---|---|---|
| Duralast 8838-LF | 110psi (7.6bar) | 200psi (14bar) | -4 to 392°F (-20 to 200°C) | Up to 4,200 fpm (21m/s) | NO | 4 |
| Fluoroelastomer (FKM),Viton® | 110psi (7.6bar) | 200psi (14bar) | -4 to 392°F (-20 to 200°C) | Up to 3,800 fpm (19m/s) | NO | 3.6 |
| Duralast 5117-LF | 110psi (7.6bar) | 200psi (14bar) | -13 to 212°F (-25 to 100°C) | Up to 1,500 fpm (7.5m/s) | NO | 2 |
| Nitrile (NBR) | 110psi (7.6bar) | 200psi (14bar) | -13 to 212°F (-25 to 100°C) | Up to 1,200 fpm (6m/s) | NO | 1.8 |
| A Shaft Diameter | CS Cross-section | D Bore Diameter | B Diameter Tol. +/- 0.010 | L | F | C Chamfer | R1 Radius |
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|---|---|---|---|---|---|---|---|---|---|---|
| Standard Range | Functional Range | Tolerance | D= | Tolerance | B= | Tol. +0.010/-0 | min. | max. | ||
| 0.750-2.999" | 0.750 - 31.000" | +/-0.003 | 7/16 | A + 0.875 | +/-.001 | A + 0.100 | 0.450 | 0.383 | 0.040 | 0.020 |
| 3.000 - 5.999" | 0.750 - 31.000" | +/-0.004 | 1/2 | A + 1.000 | +/-.0015 | A + 0.200 | 0.512 | 0.425 | 0.090 | 0.030 |
| 6.000 - 13.999" | 1.000 - 31.000" | +/-0.005 | 5/8 | A + 1.250 | +/-.002 | A + 0.200 | 0.637 | 0.530 | 0.130 | 0.030 |
| 14.000 - 30.999" | 2.000 - 31.000" | +/-0.006 | 3/4 | A + 1.500 | +/-.003 | A + 0.220 | 0.637 | 0.530 | 0.150 | 0.030 |
| 31.000 - 63.000" | consult with AHPSeals engineering | |||||||||
| *Standard cross-sections (CS) listed and non-standard sizes can be provided for any shaft size up to 63 inches. Seal retaining plate for pressures above 7 psi recommended. Surface finish: Shaft (A) plunge ground, zero lead, Ra 8-16µin for rubber seal lip, Ra 6-12µin for PTFE seal lip. Housing (D,L) Ra 32-63µin, shaft material hardness 55-65RC. See Technical Info for more specific information. | ||||||||||
