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 5990-00-488-1091
NSN 6610-01-155-2661
NSN 5996-01-327-6853
NSN 5895-00-943-3552
NSN 5925-01-323-6491
NSN 5930-00-979-0270
NSN 6110-00-042-0978
NSN 6110-00-433-2250
NSN 5920-01-521-4262
NSN 6620-00-171-4035
NSN 5998-00-593-5463
NSN 5999-01-025-7468