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 5975-01-573-7455
NSN 5855-01-023-3727
NSN 5999-01-590-9185
NSN 5895-00-278-8092
NSN 5998-01-517-9933
NSN 6650-00-315-4133
NSN 5945-01-231-3232
NSN 5945-00-067-6712
NSN 6620-01-501-7999
NSN 5990-01-084-0807
NSN 6685-01-606-9171
NSN 5996-01-563-3555