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 6610-01-502-5952
NSN 6105-00-042-9143
NSN 6645-00-015-6018
NSN 5985-01-437-8863
NSN 6105-01-656-0530
NSN 5910-01-605-3393
NSN 5930-01-051-1281
NSN 6240-01-368-6248
NSN 5910-01-224-7203
NSN 4140-00-239-9174
NSN 2925-01-317-6973
NSN 5990-01-170-6081