Parker’s “A” style V seal, also called a V ring, is primarily used for the exclusion of dirt, dust or water as well as retention of grease or other viscous fluids. The V seal may also be used as a secondary seal to protect primary seals by excluding contamination in hostile environments.
How it works: The seal body has a stretch fit on the shaft and the flexible lip seals against the counter face. As the shaft rotates the seal also acts as a slinger. Centrifugal force produces a decrease in contact pressure of the elastomer lip as speeds increase – keeping frictional losses and heat to a minimum.
Standard Materials:
• NBR; Temp -40F / +225F
• FKM: -30F / +325F
Shaft Surface Speed: To 1600 fpm (8.1 m/s)
Shaft Size Range: 0.110 to 79.530 inches (2.8 to 2020 mm)
Maximum Shaft Dynamic Runout (TIR): Within limits of fitted width assembly dimension, B1, as illustrated in the Literature document in the Product Support tab, titled “Rotary Shaft V Seals and Excluders from Parker.”
Maximum (STBM) Misalignment: 1 to 4 degrees
Maximum Pressure: 0 psi
Typical Applications:
General purpose V seals (or V rings) are commonly used in a variety of applications including small motors, conveyors, appliances, agriculture and automotive equipment, work rolls, rolling mills, pumps and gear boxes.
