National Item Identification Number

01-507-2777
015072777
5330-01-507-2777
5330015072777

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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1VCN7

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HYDRAULICS INTERNATIONAL INC
9000 MASON AVENUE
CHATSWORTH
CA
91311
818-718-2462

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Reference Numbers (Part Numbers)

8-012-N300-90

Required Categories

Required Description