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 5999-00-070-9863
NSN 5985-01-272-0320
NSN 6620-01-199-4005
NSN 6650-01-562-9944
NSN 5999-01-021-3430
NSN 5990-01-149-9228
NSN 5935-00-254-3138
NSN 5925-00-691-2434
NSN 6110-01-106-2708
NSN 5998-01-225-9395
NSN 5915-01-535-6666
NSN 6110-01-461-2631