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 5920-01-178-9581
NSN 6135-00-951-3426
NSN 6220-00-190-2000
NSN 5895-01-185-2981
NSN 4140-00-905-6570
NSN 5985-01-418-4207
NSN 6145-00-351-4539
NSN 6105-01-606-2140
NSN 5925-01-209-2768
NSN 5999-00-378-9680
NSN 5925-01-341-0730
NSN 6105-01-012-0965