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 6620-00-600-9869
NSN 6145-01-657-6041
NSN 7035-00-616-4410
NSN 7035-00-371-7749
NSN 5965-00-164-8092
NSN 5835-01-123-8305
NSN 5960-00-845-9952
NSN 4140-01-451-9841
NSN 6130-01-190-7052
NSN 5930-00-886-9048
NSN 6650-00-118-5600
NSN 5996-01-099-2841