5340-99-147-1577 GUARD,SPECIAL Index 4820-99-147-1612 SEAT,VALVE

National Stock Number:
5330-99-147-1585

Federal Supply Class:
5330

National Item Identification Number:
991471585

Description:
PACKING,PREFORMED

Detail:
A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see WASHER (as modified) and GASKET. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see SEAL, NONMETALLIC ANGLE; SEAL, NONMETALLIC CHANNEL; and SEAL, NONMETALLIC, SPECIAL SHAPED SECTION. For circular (with aperature) nonmetallic items with a solid round cross-section see O-RING. Excludes CUP, COMPRESSION; GASKET; WASHER (as modified); and FELT, MECHANICAL, PREFORMED.


Manufacturer Information:
BC22134 ITEM 3U0817BRADFORD CYLINDERS LTD
BC22134 ITEM 3U4707VT MARINE PRODUCTS LTD
CSW 250U3732CLARON HYDRAULIC SEALS LTD


Techincal Specification:
CENTER HOLE DIAMETER2.500 INCHES NOMINAL
CROSS-SECTIONAL SHAPE STYLEU
MATERIALPLASTIC POLYIMIDE OVERALL
PERIPHERAL DIAMETER3.000 INCHES MINIMUM AND 3.005 INCHES MAXIMUM
SPECIAL FEATURESANY ACCEPTABLE COLOUR


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