National Item Identification Number

01-528-0330
015280330
5330-01-528-0330
5330015280330

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)

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81205

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Reference Numbers (Part Numbers)

66-32066

Required Categories

MATERIAL
CROSS-SECTIONAL SHAPE STYLE
III END ITEM IDENTIFICATION
CROSS-SECTIO

Required Description

PLASTIC POLYTETRAFLUOROETHYLENE
1 SOLID
C-135 AIRCRAFT
0.080 INCHES NOMINAL;