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 6645-00-909-2143
NSN 5975-01-077-7119
NSN 5905-01-445-5923
NSN 7035-01-524-7018
NSN 6650-01-453-2382
NSN 5895-00-342-9581
NSN 5950-01-476-1444
NSN 5990-00-932-3070
NSN 5950-00-288-0066
NSN 5998-00-555-6318
NSN 6685-01-254-7639
NSN 6145-01-113-8205