Single outside rotary

The Style 16 is a balanced multi-spring outside mounted rotary seal. This design provides sealing without product contact with the metal seal parts. It is often used in chemical applications where the seal must be mounted on a non-metallic shaft. In these cases the Style 16 can be provided with a clamp type drive collar, otherwise a set-screw type driver is the standard.  


  • Outside mounted
  • Preset
  • Balanced design
  • Split drive collar option
  • Metal parts isolated from media
  • Accessible for cleaning and resettings
  • No measuring required
  • Withstands up to 150 psi / 10 bar
  • Suitable for plastic coated shafts
  • Eliminates corrosion
  • Designed for applications where there is insufficient space in the seal chamber or where chemicals may attack metal parts
  • Setscrew drive for metal shafts or clamp collar for non-metallic hardened shafts


  • Minimum Shaft Diameter:        1.000 in.    /    25.4 mm
  • Maximum Shaft Diameter:    4.000 in.     /   101.6 mm
  • Pressure:                To 150 psi     /    10 bar
  • Temperature:            To 400°F     /    204°C
  • Speed:                      To 2500 fpm / 12.7 m/s
  • Spring Configuration:         Multiple rotary coil springs


  • Metallurgy: 316SS
  • Rotary face: Chemical grade carbon (Other options available)
  • Set screws: Hastelloy C®
  • Springs: Hastelloy C®
  • O-rings: Fluoroelastomer standard

Hastelloy C is a registered trademark of Haynes International.


  • Non-metallic shafts in chemical applications
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