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 6150-01-574-5080
NSN 5975-01-159-9315
NSN 6610-01-564-7464
NSN 5915-00-193-6850
NSN 5996-01-580-4604
NSN 6105-01-308-5282
NSN 2925-01-142-0981
NSN 6685-01-186-4337
NSN 5835-01-055-6063
NSN 6105-01-348-6606
NSN 5935-00-924-9992
NSN 4140-01-530-1907