4730-01-514-7220 FLANGE,PIPE Index 5330-01-514-7222 BACK-UP RING,PREFORMED PACKING

National Stock Number:
5330-01-514-7221

Federal Supply Class:
5330

National Item Identification Number:
015147221

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.


Manufacturer Information:
095-178811083CATERPILLAR INC


Techincal Specification:
PART NAME ASSIGNED BY CONTROLLING AGENCYRING,BACK-UP


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