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 6645-00-857-0410
NSN 5985-00-935-5074
NSN 5910-01-471-8338
NSN 5915-01-180-7199
NSN 5930-00-554-1064
NSN 6620-01-428-7072
NSN 6320-01-359-3921
NSN 7035-01-106-3476
NSN 6220-00-482-9605
NSN 5999-01-357-7817
NSN 6620-00-170-5296
NSN 5990-00-752-2126