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 6105-01-363-1288
NSN 6240-01-339-0069
NSN 5910-00-148-7031
NSN 5965-01-384-4912
NSN 5990-00-697-8883
NSN 6130-00-661-0197
NSN 6240-01-485-3116
NSN 4140-01-553-1477
NSN 5930-01-414-8916
NSN 5985-01-085-5573
NSN 5960-01-372-3290
NSN 6320-00-809-5744