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 6145-00-172-6488
NSN 5895-01-268-2031
NSN 6320-01-370-4218
NSN 5996-01-209-5886
NSN 5835-00-974-9983
NSN 6620-00-451-1460
NSN 5975-01-449-1462
NSN 6110-01-062-2208
NSN 5935-01-212-5923
NSN 5935-01-025-5111
NSN 6320-00-098-2858
NSN 6105-01-273-3938