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 6105-01-423-4980
NSN 5930-00-057-7096
NSN 5910-00-708-5195
NSN 6130-00-179-5211
NSN 6645-01-451-0260
NSN 5945-00-105-9040
NSN 6620-00-752-7872
NSN 5930-00-180-3845
NSN 6650-01-418-6661
NSN 6150-01-273-0183
NSN 5895-01-416-1900
NSN 5960-01-123-3313