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.
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
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.
The part numbering system requires the use of the material designator table found below. For nonstandard designs contact GT engineering.
The part numbering system requires the use of the material designator table found in the previous column. For nonstandard designs contact GT engineering.
Contact your local Greene, Tweed representative for specific recommendations to suit higher performance requirements.