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 7035-01-261-6779
NSN 5996-01-177-2848
NSN 4140-01-486-6094
NSN 5920-00-203-5938
NSN 5855-01-049-0175
NSN 5975-01-252-3611
NSN 7035-01-153-1767
NSN 6650-01-408-5089
NSN 6610-00-670-7801
NSN 5905-00-457-5027
NSN 6685-01-121-2193
NSN 5960-01-244-6610