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 5935-01-374-0654
NSN 6105-00-216-5813
NSN 6220-01-439-7474
NSN 4140-01-650-9116
NSN 2925-01-065-0060
NSN 6145-00-910-8847
NSN 5935-01-634-0668
NSN 6610-01-158-7311
NSN 5996-01-042-8554
NSN 6650-00-597-7313
NSN 6685-01-383-6961
NSN 7035-00-946-2642