V-Spring Piston Seal
Non-symmetrical piston seal for use in dynamic sealing application. Chamfered seal lips provide for easy installation and better lubrication, resulting in extended seal and mating surface hardware life.
|Material||Operating Pressure up to||Maximum Pressure up to||Temperature||Surface Speed up to||Fluid, Media Compatability|
|Permachem xxxx||5,000psi (350bar) vacuum||10,000psi (700bar)||-328°F to 500°F (-200°C to 260°C)||33ft/s (10m/s)||Various material compound and spring combinations are available for aggressive chemicals, NACE service, chlorine service, cryogenic service, vacuum service, FDA (both contact and non-contact), fugitive emissions, as well as control fluids, hydraulic fluids, dry running in a wide range of gases|
|Material Permachem xxxx will be selected by AHPSeals to match your operating conditions.|
|*Important Note: Maximum values above depend on extrusion gap, clearances, seal material, media, temperatures, pressures, surface speed, dynamic running surface finish and working environment. Seals cannot be operated at their upper ratings at the same time. For pressure above 3.000psi (210bar)or temperature above 200°F (95°C), please contact engineering for seal material and hardware specification.|
Size Table (Inch)The standard range sizes listed below are the preferred sizes for new design applications. Seals are available for any bore size in 0.001inch increments, including functional range. Additionally, we offer any other seal size as required.
|S|| C || R|
|Standard Range||Functional Range||Tolerance||D=||BP=||D, B||Tolerances +0.010/-0||min.||min.||max.|
|0.125 - 0.249||0.125 - 4.000"||-0/+0.001||1/16||A - 0.125||A - 0.004||+0/-0.001||0.095||0.150||0.050||0.025||0.008|
|0.250 - 0.874"||0.230 - 6.000"||-0/+0.002||3/32 ||A - 0.187||A - 0.006||+0/-0.002||0.140||0.180||0.070||0.025||0.015|
|0.875 - 1.674"||0.335 - 20.000"||-0/+0.002||1/8||A - 0.250||A - 0.008||+0/-0.002||0.185||0.235||0.090||0.030||0.015|
|1.675 - 4.999"||0.750 - 30.000"||-0/+0.002||3/16||A - 0.375||A - 0.012||+0/-0.002||0.280||0.330||0.110||0.060||0.015|
|5.000 - 21.999"||1.575 - 72.000"||-0/+0.004||1/4||A - 0.500||A - 0.016||+0/-0.004||0.375||0.475||0.140||0.080||0.015|
|22.000 - 40.999"||1.575 - 72.000"||-0/+0.005||5/16||A - 0.625||A - 0.020||+0/-0.005||0.460||0.580||0.150||0.110||0.020|
|41.000 - 72.000"||consult AHPSeals engineering |
| *Standard cross-sections (CS) listed and non-standard sizes can be provided for any shaft size up to 72 inches. ** Based on using no wear rings, larger clearance required if using wear rings.|
For pressure above 3.000psi or temperature above 200°F contact engineering for clearances. Surface finish: Shaft (A) plunge ground, Ra 4-8µin - Housing (D,L) Ra 16-32µin.
Shaft material hardness 55-65RC. See Technical Info for more specific information.
Seal Housing Drawing