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 5925-01-562-3429
NSN 6220-01-334-0613
NSN 5950-00-443-9676
NSN 6220-00-289-9915
NSN 5975-00-224-6022
NSN 5920-00-209-0443
NSN 5835-00-393-1996
NSN 6610-01-200-4610
NSN 5990-01-386-5561
NSN 6240-01-581-2000
NSN 6320-01-084-7456
NSN 5925-01-167-8144