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 6240-01-579-3758
NSN 5915-01-351-8037
NSN 4140-00-679-9512
NSN 5910-01-125-5057
NSN 5920-01-007-8775
NSN 6240-01-126-9167
NSN 7035-00-088-7355
NSN 5996-01-202-8127
NSN 6110-01-500-6070
NSN 5910-01-347-4403
NSN 5920-01-581-0015
NSN 6610-00-161-0680