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 5945-01-255-2097
NSN 5905-01-127-0713
NSN 5975-01-270-9346
NSN 5990-01-027-8260
NSN 5905-00-370-0326
NSN 6150-01-469-6796
NSN 5985-01-519-3784
NSN 5930-01-384-6192
NSN 5998-00-627-6575
NSN 6650-00-831-5532
NSN 6610-01-476-7412
NSN 5920-01-346-4777