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 5915-01-648-7354
NSN 5965-01-255-5581
NSN 6135-01-419-5574
NSN 5985-01-418-3929
NSN 5945-00-729-3403
NSN 5999-00-936-9271
NSN 5975-01-619-0947
NSN 6620-01-415-5803
NSN 6135-01-450-3781
NSN 5835-00-770-2843
NSN 5895-00-869-8653
NSN 6110-01-421-5880