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 6145-01-050-7531
NSN 6320-01-475-7654
NSN 6110-01-485-3312
NSN 5950-00-935-0232
NSN 5998-01-029-2909
NSN 6240-01-315-4463
NSN 6610-00-097-5176
NSN 4140-01-324-0324
NSN 5915-01-419-9719
NSN 5998-01-220-4086
NSN 4140-01-225-0041
NSN 5975-01-648-8089