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 5945-01-216-2378
NSN 5975-01-421-4474
NSN 5855-01-533-7051
NSN 6320-01-514-6141
NSN 5998-01-057-1157
NSN 6150-01-451-3363
NSN 5985-00-544-9426
NSN 5985-01-444-8788
NSN 5930-01-066-8694
NSN 6610-01-032-2890
NSN 6645-00-155-0014
NSN 7035-00-541-8516