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 6130-01-422-2603
NSN 5925-00-998-4345
NSN 5965-01-517-7105
NSN 2925-01-340-5504
NSN 5925-01-495-5735
NSN 5960-01-563-6975
NSN 4140-01-439-6490
NSN 5910-01-510-3935
NSN 2925-01-633-4048
NSN 6130-01-608-5736
NSN 5996-00-098-3864
NSN 7035-01-441-9509