V SERIES / CANTILEVER
ETS sells V Series or Cantilever spring energized seals, which are commonly used in reciprocating rods & pistons for abrasive materials sealing and applications requiring a wide tolerance. These V-shaped seals are made from flat metal strip stock of various metal options. The metal is then punched or chemically etched into a serpentine pattern and formed into a rounded “V” shape. The finished spring produces a moderate load versus deflection range. It is a common seal suitable for many applications. We’re ready to be your seal supplier!
Features
• V-Shaped Spring with Moderate Load vs Deflection
• Standard Inch Fractional and MIL-G-5514 Sizes
• Standard 300 Series Stainless Steel Springs
• NACE Compliant Elgiloy® Springs Available
• Stock Sizes (VS-100 Series) From 1/8” to 3” Diameters
• Temperature Range from -100° to 600° F.
• Vacuum to 3000 psi Standard / 10,000 Extended
• Scraper Lip Designs for Abrasive Medias
• Available As External & Internal Pressure Face Seals
Recommended Applications
• Reciprocating Rod and Piston Seals
• Rotary Shafts < 300 Surface Feet Per Minute
• Wide Tolerance and Misaligned Glands (static)
• Abrasive Medias (when scraper lip is designated)
• Dynamic Applications above 450° F.
The Cantilever spring is intended for dynamic applications involving rotary or reciprocating motion. It can also be used in static conditions when there is need for a higher deflection spring due to wide gland tolerance, excessive expansion and contraction or lift off due to high pressure. The long beam leg design puts the spring load out at the leading edge of the seal, creating the best load location for the seal to act as scraper or excluder seal when the optional scraper lip is selected. Cantilever Spring / V Series Compressed Spring Force Load Point Load Point The geometry of the Series V cantilever spring provides flexibility by utilizing individual tabs, separated by small gaps. This shape allows the spring to flex into radial and axial seal designs. The spring tabs can overlap on the ID and spread apart on the OD when the cross-section is too large for the diameter. The chart on the left provides the minimum diameters for Series V springs for rod and piston seals, as well as internal and external pressure face seals. For diameters smaller than those listed, it is recommended to utilize Series C or Series H spring designs.