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National Stock Number:
5330-01-564-0314
Federal Supply Class:
5330
National Item Identification Number:
015640314
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:
| 296-44200-000-5550 | 5F573 | GREENE TWEED & CO INC |
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Techincal Specification:
| CENTER HOLE DIAMETER | 7.244 INCHES MINIMUM AND 7.247 INCHES MAXIMUM | | CROSS-SECTIONAL SHAPE STYLE | DOUBLE SPIRAL | | CROSS-SECTIONAL THICKNESS | 0.579 INCHES MINIMUM AND 0.589 INCHES MAXIMUM | | MATERIAL | CARBON | | PERIPHERAL DIAMETER | 7.720 INCHES MINIMUM AND 7.722 INCHES MAXIMUM |
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