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 5920-01-252-8660
NSN 6685-01-627-4226
NSN 5910-01-650-0017
NSN 6135-00-269-5843
NSN 5905-01-625-3973
NSN 5930-01-596-6619
NSN 5930-00-073-3634
NSN 5945-01-337-6473
NSN 6130-00-346-7833
NSN 6685-00-257-4088
NSN 5998-00-274-3268
NSN 6110-00-663-4054