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MSE® SEAL

Versatile Sealing Performance

METAL SPRING ENERGIZED (MSE®) SEALS

Metal Spring Energized (MSE®) seal’s superior designed dual-lip body offers improved sealing performance. An unlimited number of custom-engineered MSE configurations are available. Greene, Tweed’s Metal Spring Energized (MSE®) seals:

  • Are machined not molded resulting in lower costs and quicker turnaround time compared to molded elastomeric seals
  • Fit most types of O-ring grooves with an open configuration*
  • Offer unlimited shelf life
  • Are available in sizes from 0.110 inch to 60 inches in diameter
  • Are available in different spring designs
  • Can be produced in custom sizes

*Metal Spring Energized (MSE®) seals are not typically installable in closed grooves.

FEATURES & BENEFITS

  • Low friction
    – Precise and uniform movement without stick/slip
    – Low power absorption and torque requirements
    – Friction can be adjusted and controlled
    – Can run dry or lubricated giving a long service life
  • Able to withstand corrosive environments
    – Virtually unlimited media service with one seal
    – Will not contaminate sensitive media
  • Wide temperature performance envelope
    – Cryogenic to 625°F (330°C), giving excellent performance at extreme temperatures
  • Operates effectively at pressures from vacuum to 19,000 psi (1,300 bar)

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APPLICATIONS

  • Aircraft engines
  • Brakes
  • Fuel controls, pumps, valves
  • Gearboxes
  • Hydraulic systems
  • APUs (Auxiliary Power Unit)
  • Scrapers across various platforms
  • Static seals in utility and landing gear actuation systems
  • Oxygen systems
  • Cryo coolers

MSE® DESIGN

The Metal Spring Energized (MSE®) seal 2000 series uses a cantilever-type stainless steel spring to act as an energizer during low-pressure situations. The spring compensates for seal wear in dynamic applications as well as overcoming the nonresilient nature of PTFE materials. Calculated spring force is applied directly over the sealing lips creating a leakfree seal without causing excessive friction and wear. As pressure is applied the spring cavity is pressure energized, assisting the
spring load. The dual lip cover is designed to provide primary sealing at the outermost contact point and secondary sealing at the innermost contact point.

Metal Spring Energized (MSE®) Series

  • Series 2000 or 2060—Dual lip seals are energized by a medium load metal finger spring designed for general use under static or dynamic conditions. Temperature range -65°F to 550°F (-54°C to 288°C), surface speeds up to 250 ft/min. and pressures up to 60,000 psi. Available in rod and piston designs.

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  • Series 2001 or 2061—The scraper lip design is best suited for non lubricated applications or where abrasive media are present and where space is limited. The scraper lip keeps abrasive media from getting between the seal and the hardware, thus decreasing abrasion. Available in rod and piston designs.

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  • Series 2301 or 2361—The Series is preferred for high-temperature/high-pressure scraper applications. Rod types use one back-up gland width. Note: Piston-type arrangements are available upon request.

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  • Series 2100 or 2160—The flanged Series 2100 dual lip seal is intended for use in lubricated applications or where the seal can be pre-lubricated. The flange helps prevent seal rotation, a major cause in rotary seal failure. For abrasive media or where dry sealing is required, the Series 2101 (2161) is the preferred choice. The scraper lip keeps abrasive media from getting between the seal and the shaft, thus decreasing abrasion.

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  • Series I2000 or 2060—MSE internal pressure face seals are intended for both static and dynamic applications. However, whenever possible, it is recommended that dynamic sealing should be accomplished with a radial-type seal.

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  • Series 3000 or 3060—Series 3000 seals are energized by a high-loading coil spring and are intended for temperatures from 270°F to 550°F (-168°C to 288°C). Series 3000 seals are mainly designed for static applications but will also work under dynamic conditions with surface speeds up to 100 ft/min. Configurations: rod, piston, flanged and face seals.

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Metal Spring Energized (MSE®) PART NUMBERING SYSTEM

The part numbering system requires the use of the material designator tables found in the next column. For nonstandard designs contact GT engineering.

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Contact your local Greene, Tweed representative for specific
recommendations to suit higher performance requirements.

 Material Designator Tables
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SEAL CONFIGURATIONS

Special consideration should be given to applications that require sealing at temperatures below -65°F (-54°C). The thermal contraction of PTFE materials must be overcome to ensure positive sealing. This is best accomplished by 1) trapping the PTFE on the flanged OD to prevent shrinkage away from the hardware, and 2) geometry changes in the jacket and spring design to assure positive loading. Both are accomplished by flanged seal designs.

Gland Dimensions
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 Gland Dimensions
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 Static Face Seal Gland*
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INTERNAL PRESSURE FACE SEALS DIMENSIONAL INFORMATION (IN INCHES)

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