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 5905-01-355-8919
NSN 5996-01-023-7896
NSN 6320-00-500-4172
NSN 5998-01-633-2996
NSN 5999-00-386-5958
NSN 6130-00-466-2019
NSN 5915-01-181-5603
NSN 6130-00-827-4518
NSN 6145-01-055-8851
NSN 5930-01-359-8953
NSN 5855-01-461-8169
NSN 5920-00-099-0826