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 5915-01-390-8296
NSN 5999-01-557-7482
NSN 2925-01-567-8027
NSN 6650-00-401-7896
NSN 2925-00-253-1655
NSN 5835-00-133-9186
NSN 6610-01-646-9101
NSN 5945-01-371-8085
NSN 6685-00-203-4485
NSN 5985-01-423-5076
NSN 5920-01-152-1021
NSN 5910-01-361-6161