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O-Rings

COST-EFFECTIVE SOLUTIONS

O-rings are one of the oldest and most widely used styles of seal geometries in the Aerospace industry today. This uncomplicated design provides a suitable, cost-effective solution to a variety of sealing applications. O-rings can be used either as a seal itself or as the energizing element in a variety of PTFE, cap-type seals.

Greene Tweed’s extensive seal experience and superior quality
is reflected in our ability to manufacture O-rings made from high-performance, elastomeric materials. A variety of expressly formulated compounds are available to meet our customer’s specific application requirements.

FEATURES & BENEFITS

  • Simplistic, cost-effective geometry
  • Wide range of sizes available for AS4716 and MIL-G-5514 gland configurations

APPLICATIONS

  • Fuel systems
  • Control valves
  • Utility actuators
  • Energizers for PTFE cap seals

A9 SERIES O-RINGS

This series of O-rings is designed to meet the dimensional requirements for several of the industry’s O-ring standards such as AS568, AS28775, AS28778, NAS1611 and NAS1612

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4150 SERIES O-RINGS

The 4150 series of O-rings has larger cross-sections for improved static sealing. Historically, O-rings designed for static applications but used in dynamic-type glands such as MIL-G-5514 or AS4716 have experienced sealing leakage challenges under certain circumstances. To help combat this issue, new static gland standards such as AS5857 feature decreased packing space. This allows standard O-rings to exhibit higher levels of squeeze and helps to reduce sealing problems.

Alternatively, the larger cross-sections of our 4150 O-rings are specifically designed to impose optimal levels of “high” squeeze in the existing dynamic gland standards of AS4716 and MIL-G-5514.

A9 O-RING SERIES PART NUMBERING SYSTEM

The part numbering system requires the use of the material designator table found below. For nonstandard designs contact GT engineering.

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Material Designator Table

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4150 STATIC O-RING SERIES PART NUMBERING SYSTEM

The part numbering system requires the use of the material designator table found in the previous 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.



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