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 5990-01-359-7150
NSN 6620-00-485-4136
NSN 6110-00-844-6230
NSN 5960-01-599-9821
NSN 5910-00-269-4755
NSN 5930-01-006-5762
NSN 5975-00-361-7793
NSN 6135-01-503-1688
NSN 5998-00-166-0758
NSN 5996-00-723-3893
NSN 6610-01-452-5180
NSN 4140-00-289-9263