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National Stock Number:
5330-01-516-8847
Federal Supply Class:
5330
National Item Identification Number:
015168847
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:
| V1E10526 ITEM 31 | 99517 | VACCO INDUSTRIES | | V5D10013-04 | 99517 | VACCO INDUSTRIES |
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Techincal Specification:
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-R-8791 MIL SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | PLASTIC POLYTETRAFLUOROETHYLENE |
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