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 5990-00-223-3258
NSN 6220-01-016-8128
NSN 5905-01-086-1065
NSN 6645-01-582-2601
NSN 5925-00-768-5822
NSN 5985-01-383-8222
NSN 4140-00-732-9427
NSN 5965-01-104-8559
NSN 6130-00-635-0285
NSN 5990-01-352-5255
NSN 6645-01-482-9704
NSN 5910-01-395-3937