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National Stock Number:
5330-01-546-7714
Federal Supply Class:
5330
National Item Identification Number:
015467714
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:
| 5500500-28 | 7H596 | GLOBAL INCORPORATED |
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Techincal Specification:
| CENTER HOLE DIAMETER | 0.696 INCHES MINIMUM AND 0.714 INCHES MAXIMUM | | CROSS-SECTIONAL SHAPE STYLE | CONTOURED FACE SOLID | | CROSS-SECTIONAL HEIGHT | 0.049 INCHES NOMINAL | | HARDNESS RATING | 90.0 SHORE DUROMETER A NOMINAL | | MATERIAL | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR | | SPECIAL FEATURES | ABSORBS SLIGHT AMT OF OIL, AIDING LUBRICATION; RESISTS COLD FLOW AND TENDENCY TO EXTRUDE UNDER HIGH PRESSURE | | PERIPHERAL DIAMETER | 0.758 INCHES NOMINAL | | TEMP RATING | -40.0 CELSIUS AND 121.0 CELSIUS |
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