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AGT® S+ RINGS

HIGH-SQUEEZE AGT RINGS FOR
STATIC APPLICATIONS UTILIZING AS5857 GLANDS

Greene, Tweed’s AGT® S+ rings have been specifically designed in response to the current SAE AS5857 standard. The AS5857 specification details gland designs that work efficiently and effectively in both high- and low-pressure static applications that require high-squeeze sealing.

A high-squeeze seal can be utilized to overcome demanding application requirements such as:

  • The need for efficient low-pressure sealing
  • Frequent cold temperature excursions
  • Low seal swell conditions
  • Excessive hardware laydown or eccentricities

The AGT S+ is based on the classic AGT geometry that has been successfully used in a variety of Aerospace applications, and with this high-squeeze option, performance and reliability are now assured.

The separation of the sealing and anti-extrusion components allows Greene, Tweed to finely tune the large range material properties available from our formulated elastomer, Avalon® (PTFE) and Arlon® (PEEK) ranges to ensure optimum sealing and extrusion resistance in the most challenging and harsh environments.

FEATURES & BENEFITS

  • Increased squeeze levels as compared to AS4716 in order to provide more effective static sealing in low-temperature (and low swell) conditions
  • Superior stability, extrusion resistance and service life over standard O-ring seals for extended service life
  • Suitable for a wide range of temperature environments, including cold temperature excursions
  • Equally effective as both a bidirectional or unidirectional seal, offering user more versatility
  • Extrusion resistance even in “0” back-up ring width grooves, allowing for use in smaller gland widths
  • Suitable for system pressures up to 8,000 psi (552 bar), allowing for use in newer application designs
  • Designed specifically for AS5857 glands

As with the AGT® ring, service life and stability are far greater with
this seal arrangement than with O-ring alternatives. This specific
seal geometry allows the flange section of the elastomer to continuously
support and energize the back-up ring components ensuring
constant extrusion resistance and providing a very responsive
sealing format.

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AGT S+ RING CONFIGURATIONS

Gland Dimensions

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AGT S+ RING OPTIONS

“Flash Free” Option
Typical O-ring and generic “T” rings are molded with a parting line around the critical ID and OD sealing surfaces. This inherent interruption on the contact surface can lead to bypass seepage when sealing low molecular weight gases and liquids in low-pressure accumulators/reservoir applications. Greene, Tweed offers an “E” type Flash free AGT® ring for users requiring the highest level of sealing efficiency.

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AGT S+ RING OPTIONS

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

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