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 6320-00-646-3311
NSN 5996-01-386-2045
NSN 6645-01-535-7136
NSN 5905-01-419-3445
NSN 6240-01-263-0123
NSN 5965-01-434-4095
NSN 5925-01-472-3382
NSN 4140-01-159-2639
NSN 5965-00-285-0745
NSN 5935-00-862-9877
NSN 6650-00-056-1581
NSN 5975-00-919-0043