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 5965-01-549-4942
NSN 6685-01-060-5797
NSN 5925-01-363-7765
NSN 6130-00-905-5618
NSN 6130-01-098-2919
NSN 5920-01-151-9117
NSN 5925-01-648-2169
NSN 6610-01-235-5566
NSN 6320-01-331-1783
NSN 5920-00-990-9727
NSN 5985-01-429-0074
NSN 5960-01-386-9611