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 6105-01-269-5427
NSN 5985-00-627-1336
NSN 5950-01-296-3973
NSN 5910-01-121-2275
NSN 5999-01-103-9501
NSN 5999-01-629-6082
NSN 5990-01-261-2962
NSN 6150-01-515-6305
NSN 6130-01-507-2278
NSN 5935-01-224-8365
NSN 5960-01-219-5504
NSN 5960-01-456-1735