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 6110-00-269-2696
NSN 5990-00-763-1931
NSN 6130-01-345-5841
NSN 6110-00-233-8121
NSN 6145-01-571-7928
NSN 5855-01-203-4719
NSN 6620-00-115-9050
NSN 6685-01-245-9862
NSN 6240-00-153-8929
NSN 5998-01-601-5133
NSN 5996-01-458-3885
NSN 6320-01-445-5893