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 4140-01-065-3981
NSN 5925-00-369-7747
NSN 6610-01-381-3181
NSN 5996-01-335-2589
NSN 5910-01-142-2688
NSN 5910-00-934-2783
NSN 5905-01-252-4540
NSN 5855-01-354-7291
NSN 5835-01-085-9591
NSN 6105-00-383-7231
NSN 6105-01-348-6606
NSN 6645-01-144-8627