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 6620-00-261-5396
NSN 6145-01-357-5648
NSN 6650-01-344-5376
NSN 6240-00-234-5781
NSN 5905-01-576-5202
NSN 5990-01-226-6924
NSN 6240-00-309-7767
NSN 6220-00-452-5308
NSN 5945-01-178-9024
NSN 5920-01-521-9808
NSN 5950-00-639-3821
NSN 5965-01-633-8849