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 5999-01-399-6687
NSN 5999-00-529-0157
NSN 7035-01-359-7460
NSN 6220-00-719-7714
NSN 5996-01-154-4284
NSN 5920-01-129-9724
NSN 5990-01-570-5471
NSN 5960-01-276-7836
NSN 6145-01-011-8251
NSN 5950-00-180-8261
NSN 6320-01-082-2970
NSN 5999-01-433-9985