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 5960-01-212-4227
NSN 6135-00-932-3136
NSN 6135-00-998-5884
NSN 7035-01-505-5979
NSN 6150-01-266-2264
NSN 2925-01-169-6196
NSN 5950-01-436-8133
NSN 5945-01-076-3211
NSN 5855-01-297-1886
NSN 5905-01-367-6364
NSN 6650-00-647-1085
NSN 5925-00-554-4114