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 5990-01-443-2931
NSN 6620-00-292-7000
NSN 5910-01-429-1059
NSN 6220-01-364-7808
NSN 5930-01-633-9262
NSN 6320-01-627-8295
NSN 5996-01-322-7140
NSN 5985-01-147-0405
NSN 6320-01-316-6864
NSN 5895-01-202-1288
NSN 6105-01-452-6967
NSN 7035-00-541-8516