National Item Identification Number
01-530-1851
015301851
5330-01-530-1851
5330015301851
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)
59364
Reference Numbers (Part Numbers)
3119718-016
Required Categories
MATERIAL
MATERIAL DOCUMENT AND CLASSIFICATION
TEMP RATING
CROSS-SECTIONAL SHA
Required Description
PLASTIC POLYTETRAFLUOROETHYLENE
MIL-R-8791 MIL SPEC SINGLE MATERIAL RESPONSE
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