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 6130-01-359-7853
NSN 5895-01-505-1100
NSN 5998-01-559-4768
NSN 4140-01-385-4198
NSN 5998-01-594-0169
NSN 6130-00-036-9889
NSN 7035-00-104-7613
NSN 5965-01-487-4479
NSN 5950-00-562-7804
NSN 5935-00-639-1382
NSN 7035-01-232-7263
NSN 5975-01-574-4602