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 5945-00-141-0160
NSN 6620-01-185-0811
NSN 5920-00-142-9993
NSN 6145-01-626-3105
NSN 5855-01-234-5346
NSN 5905-01-401-5325
NSN 5930-01-389-4086
NSN 6145-00-452-4501
NSN 5835-01-258-5597
NSN 6610-01-257-5808
NSN 7035-01-248-8596
NSN 5998-00-596-8869