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 6645-01-571-1234
NSN 5910-01-554-8441
NSN 6105-01-160-0427
NSN 6135-01-462-0731
NSN 6135-00-930-5372
NSN 6145-01-543-3527
NSN 6150-01-549-3082
NSN 6685-01-215-7629
NSN 6150-00-391-1981
NSN 6220-00-923-9439
NSN 4140-00-099-9205
NSN 5855-00-933-9978