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 5975-01-563-0427
NSN 5999-00-161-5111
NSN 4140-00-453-5753
NSN 6320-00-468-5015
NSN 6150-01-032-6003
NSN 5905-00-504-8586
NSN 6620-00-104-6937
NSN 5998-01-317-4149
NSN 6645-01-360-4562
NSN 6110-01-051-9842
NSN 6650-00-005-8572
NSN 5999-01-592-3349