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 6610-00-686-5817
NSN 6610-01-445-7120
NSN 5990-01-013-8464
NSN 6110-01-496-2902
NSN 5925-01-599-5431
NSN 5930-01-599-0757
NSN 6220-01-292-0980
NSN 2925-00-991-4499
NSN 5915-01-406-3271
NSN 5985-00-108-2372
NSN 5996-00-580-4129
NSN 5855-01-534-7940