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 5990-01-544-4360
NSN 5935-01-017-7333
NSN 5935-00-787-0402
NSN 6650-00-819-1165
NSN 5905-01-312-2597
NSN 5855-01-425-1330
NSN 6145-01-623-9196
NSN 5905-01-363-9576
NSN 4140-01-541-9421
NSN 6610-01-328-8098
NSN 6240-01-024-1309
NSN 5920-01-640-6694