Mechanical Seal ASMS3 (Standard)

Mechanical Seal ASMS3 (Standard Bore)


  • Stationary springs and drive pin mechanism isolated from process fluids to minimize corrosion, clogging, and stress-related failures
  • Unique, metal-shrouded rotary seal ring for maximum face protection and uniform 360° transfer of torque to the rotating face during start up
  • Dynamic elastomer moves on non-metallic, smooth surface eliminating fretting
  • Stationary design for optimal face alignment



Rotating Seal Face:Sintered silicon carbide
Stationary Seal face:Carbon, Sintered silicon carbide
Springs:Hastelloy® C276
Metallurgy:316 SS
Elastomers:Viton®, Ethylene propylene, Aflas®, Buna, Neoprene, Perfluorelastomer
Gland Gasket:Glass-filled Teflon™
Throttle Bushing:Glass-filled Teflon™

Operating Conditions

Temperature:400°F (200°C)
Pressure:300 PSI (20 Bar)
Speed:6000 FPM

Note: Max Temperature / pressure / speed indicate operating extremes independently and do not imply the seal will function at these extremes at the same time. Contact Flex-A-Seal if in doubt.


For more information on the ANSI Flex line


Depending on your specific needs and application, Flex-A-Seal can help you identify the ideal products. Contact us to tell us about your needs and request a quote.