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 6320-01-214-0350
NSN 5915-01-345-1447
NSN 5999-01-147-1710
NSN 6130-01-097-3161
NSN 5835-01-441-4746
NSN 6135-00-180-5125
NSN 6110-01-142-5324
NSN 7035-01-352-6235
NSN 6650-01-145-5173
NSN 5998-01-079-2449
NSN 5945-00-905-5749
NSN 5975-00-985-2748