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 5835-00-170-5238
NSN 5996-00-357-9916
NSN 6650-01-570-0430
NSN 5925-01-020-7706
NSN 5855-01-122-9418
NSN 5965-01-629-9131
NSN 5999-00-081-9413
NSN 5975-00-168-2893
NSN 6620-01-514-7786
NSN 4140-00-361-4691
NSN 5965-00-147-3070
NSN 6145-01-616-6190