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 5925-01-281-0481
NSN 5925-01-050-9032
NSN 5925-01-249-0912
NSN 6110-00-057-6873
NSN 5935-01-433-6152
NSN 5996-00-264-0710
NSN 6650-01-380-9424
NSN 6620-01-454-8926
NSN 5996-01-240-3612
NSN 4140-01-200-8651
NSN 6130-00-187-0211
NSN 5910-01-535-1028