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 2925-01-370-6898
NSN 6240-01-506-3911
NSN 6220-01-532-0114
NSN 6610-01-236-8359
NSN 5990-00-827-3966
NSN 5915-01-391-7149
NSN 6645-01-205-3869
NSN 6220-01-568-8817
NSN 6150-01-030-4082
NSN 5990-01-171-9304
NSN 4140-00-448-1676
NSN 5996-01-238-5494