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 6620-01-364-7461
NSN 6130-01-372-0740
NSN 6145-00-521-0001
NSN 5905-00-413-1328
NSN 5945-00-537-5029
NSN 6110-01-236-5890
NSN 5985-01-349-9183
NSN 6610-01-602-5382
NSN 5915-00-951-5831
NSN 6240-00-594-7138
NSN 6320-00-270-8222
NSN 5990-01-359-8334