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National Stock Number:
5330-01-566-0385
Federal Supply Class:
5330
National Item Identification Number:
015660385
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:
| 6640222 FIND 17 | 53711 | NAVAL SEA SYSTEMS COMMAND | | 6640222-12 | 53711 | NAVAL SEA SYSTEMS COMMAND | | 8328805-1 | 53711 | NAVAL SEA SYSTEMS COMMAND | | 8328805-12 | 53711 | NAVAL SEA SYSTEMS COMMAND |
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Techincal Specification:
| CENTER HOLE DIAMETER | 2.500 INCHES MINIMUM AND 2.502 INCHES MAXIMUM | | CROSS-SECTIONAL HEIGHT | 0.065 INCHES MINIMUM AND 0.075 INCHES MAXIMUM | | CROSS-SECTIONAL SHAPE STYLE | SINGLE TURN SPIRAL | | MATERIAL | PLASTIC POLYTETRAFLUOROETHYLENE | | SPECIAL FEATURES | 1-19 TO 22 DEGREE MAXIMUM OF .007 INCH WIDE SCARF CUT | | PART NAME ASSIGNED BY CONTROLLING AGENCY | RETAINER,PACKING,BACK-UP | | PERIPHERAL DIAMETER | 2.844 INCHES MINIMUM AND 2.848 INCHES MAXIMUM |
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