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 6320-01-536-3077
NSN 6145-01-176-9842
NSN 5985-00-055-1053
NSN 6620-01-551-7071
NSN 5910-01-090-0780
NSN 5996-00-176-0999
NSN 6105-01-462-3628
NSN 5996-00-236-3206
NSN 7035-01-213-4008
NSN 6135-00-128-1633
NSN 5998-01-246-3330
NSN 6220-00-122-7588