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 6135-01-364-2738
NSN 5960-01-442-9304
NSN 6135-01-223-3869
NSN 5835-01-160-3045
NSN 6145-01-514-2566
NSN 6685-00-684-5200
NSN 6685-00-007-1404
NSN 6105-01-081-2041
NSN 5920-01-020-7659
NSN 5998-01-608-3111
NSN 6650-00-563-3880
NSN 4140-00-560-8166