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National Stock Number:
5330-01-526-1376
Federal Supply Class:
5330
National Item Identification Number:
015261376
Description:
BACK-UP RING,PREFORMED PACKING
Detail:
A CIRCULAR SHAPED ITEM WITH AN APERTURE MANUFACTURED TO PREDETERMINED DIMENSIONS, CONSTRUCTED WITH A RECTANGULAR CROSS SECTION THAT MAY BE SOLID, WITH JOINT, OR IN A HELICAL FORM THAT FACILITATES SPIRAL WRAP INSTALLATION. IT PREVENTS SEAL EXTRUSION UNDER PRESSURE AND IS DESIGNED TO FIT ON THE DOWN-PRESSURE SIDE OF A GLAND GROOVE WITH A PACKING, PREFORMED OR O-RING.
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Manufacturer Information:
| LS4564-7 | 98897 | LOCKHEED MARTIN CORP |
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Techincal Specification:
| CENTER HOLE DIAMETER | 2.375 INCHES NOMINAL | | CROSS-SECTIONAL SHAPE STYLE | SINGLE TURN SPIRAL | | CROSS-SECTIONAL HEIGHT | 0.050 INCHES MINIMUM AND 0.058 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS3651 ASSN STD SINGLE MATERIAL RESPONSE | | MATERIAL | PLASTIC POLYTRIFLUOROETHYLENE | | PERIPHERAL DIAMETER | 2.495 INCHES MINIMUM AND 2.497 INCHES MAXIMUM |
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