National Item Identification Number
01-516-5827
015165827
5330-01-516-5827
5330015165827
National Stock Number
Item Name
BACK-UP RING,PREFORMED PACKING
Federal Supply Class
5330
Description
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.
Commercial and Government Entity Code (Supplier Data)
76301
5F573
Reference Numbers (Part Numbers)
7M1189SN431-3
7431MT-4780N
7431MT-4780N
Required Categories
MATERIAL
MATERIAL DOCUMENT AND CLASSIFICATION
CROSS-SECTIONAL SHAPE STYLE
III
Required Description
PLASTIC POLYAMIDE
5F573,GTS-020 MFR REF SINGLE MATERIAL RESPONSE
2 SINGLE TURN