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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 5915-01-644-2568
NSN 5985-01-026-8704
NSN 5915-00-932-5324
NSN 6150-00-133-5742
NSN 5930-00-144-4994
NSN 6105-00-931-1416
NSN 6320-00-937-5625
NSN 7035-01-445-3563
NSN 4140-00-938-3307
NSN 6145-01-325-5765
NSN 6135-01-230-4399
NSN 5895-01-328-8045