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 6150-01-630-1814
NSN 6105-01-305-2734
NSN 5998-01-472-3691
NSN 6240-01-517-2994
NSN 6130-01-623-6351
NSN 6220-01-285-3304
NSN 5910-00-925-1630
NSN 5930-01-207-6765
NSN 5990-00-827-0684
NSN 6240-00-072-9966
NSN 6645-01-243-3138
NSN 6240-01-044-7384