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 5905-01-350-3271
NSN 5960-00-913-5398
NSN 5905-01-367-1710
NSN 4140-01-442-3063
NSN 6645-01-259-7142
NSN 5910-01-340-6217
NSN 6610-00-942-5981
NSN 6320-01-054-3046
NSN 6320-00-400-8042
NSN 6240-00-889-7349
NSN 6620-01-462-0001
NSN 5910-01-432-0126