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 6610-00-956-4464
NSN 5990-00-998-6193
NSN 5999-01-471-4272
NSN 5996-01-093-9259
NSN 5930-00-149-1696
NSN 7035-00-763-6180
NSN 5965-01-389-1068
NSN 6130-00-780-0780
NSN 5835-01-167-1824
NSN 4140-01-136-2204
NSN 6645-01-560-3034
NSN 7035-01-206-9143