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 6645-01-408-0011
NSN 6130-00-639-0666
NSN 4140-00-679-9512
NSN 6105-01-212-7087
NSN 5990-01-448-2751
NSN 6145-01-350-3043
NSN 5935-00-851-0379
NSN 6145-00-815-7154
NSN 6150-00-595-6931
NSN 5960-01-389-4055
NSN 6240-01-102-4861
NSN 6145-00-290-3484