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 5950-00-865-2032
NSN 6130-01-634-0603
NSN 5930-01-535-3636
NSN 6650-01-287-7960
NSN 5999-00-827-0703
NSN 5920-01-112-0730
NSN 2925-01-629-9416
NSN 5965-01-462-4079
NSN 5985-01-115-9469
NSN 6135-01-584-0941
NSN 6620-01-502-1656
NSN 6685-01-297-1628