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 6620-00-621-6951
NSN 6645-01-471-4960
NSN 5895-01-514-4091
NSN 5895-01-257-4651
NSN 5985-01-093-4221
NSN 5996-01-104-4161
NSN 5965-01-025-5129
NSN 6645-01-607-9104
NSN 5935-01-254-6772
NSN 5985-00-431-0359
NSN 7035-00-865-9105
NSN 4140-01-254-2739