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 5930-01-362-6676
NSN 6150-01-421-4028
NSN 6130-01-295-7215
NSN 4140-00-166-8023
NSN 5910-01-556-2723
NSN 5835-01-227-2318
NSN 5935-00-472-8835
NSN 5910-01-128-3569
NSN 4140-01-260-2433
NSN 5985-00-909-5350
NSN 5999-01-625-8738
NSN 6645-01-616-8996