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 5965-01-155-3131
NSN 5855-01-013-6864
NSN 5925-01-071-6671
NSN 6240-00-905-6050
NSN 5910-00-084-5685
NSN 5985-01-486-7179
NSN 5945-00-930-3105
NSN 6685-01-167-1926
NSN 5855-00-797-8217
NSN 6650-00-170-5095
NSN 5996-00-493-3468
NSN 5855-01-088-8700