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 5925-01-277-9592
NSN 5920-01-386-7566
NSN 5985-01-177-9160
NSN 5950-01-116-2142
NSN 5985-01-441-4033
NSN 7035-00-064-7008
NSN 5895-00-583-8339
NSN 6320-01-462-2295
NSN 6130-01-350-3585
NSN 5915-00-258-4398
NSN 5998-01-361-2136
NSN 5990-01-365-6016