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 6320-01-072-2073
NSN 6130-01-105-8401
NSN 6150-01-067-9145
NSN 5930-01-444-4074
NSN 5985-01-175-2971
NSN 5855-00-631-4565
NSN 6150-01-584-7887
NSN 5930-00-358-7844
NSN 4140-01-098-7997
NSN 5999-01-263-8687
NSN 6650-01-076-1997
NSN 5975-00-978-7190