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 4140-01-528-8364
NSN 5996-01-541-8109
NSN 7035-01-659-4110
NSN 5960-01-391-4701
NSN 5985-00-710-5473
NSN 5990-01-376-0405
NSN 7035-00-797-2635
NSN 6685-01-240-4648
NSN 5910-01-465-7442
NSN 5965-01-415-1521
NSN 5915-00-846-7632
NSN 6240-01-607-1480