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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.
Classification: Gaskets,washers & other seals
NSN 5905-01-512-1354
NSN 5910-01-458-7014
NSN 5999-00-554-4285
NSN 5975-01-092-6556
NSN 6320-00-931-4855
NSN 5910-01-057-8019
NSN 6105-01-512-0044
NSN 5905-00-835-4852
NSN 5975-01-529-6798
NSN 6150-01-604-2211
NSN 5998-01-514-8409
NSN 6645-00-551-8291