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 5920-01-134-9666
NSN 6685-01-088-7317
NSN 4140-01-439-7530
NSN 6130-00-201-3710
NSN 5975-01-202-1341
NSN 5996-00-125-4570
NSN 5905-01-429-7513
NSN 6105-00-350-6923
NSN 5930-00-186-0712
NSN 6240-01-512-1856
NSN 6645-01-392-4788
NSN 5835-00-286-5432