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 5930-01-634-0659
NSN 6650-01-380-1394
NSN 5920-00-341-6340
NSN 5855-01-379-2277
NSN 5935-01-422-1114
NSN 6620-01-535-6925
NSN 6645-00-063-1996
NSN 5975-01-580-0466
NSN 6220-01-564-6376
NSN 5999-00-902-3920
NSN 5935-01-512-8085
NSN 6685-01-314-7140