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 5855-01-569-4057
NSN 5930-01-109-2286
NSN 6135-01-508-6083
NSN 6320-01-006-6138
NSN 5910-01-278-7146
NSN 5999-01-381-7358
NSN 6650-01-150-1059
NSN 5996-00-951-3763
NSN 6320-00-809-5744
NSN 6145-01-070-9187
NSN 5990-00-093-6794
NSN 5930-00-223-0542