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 6145-01-310-8597
NSN 5990-01-436-7191
NSN 6610-00-731-3800
NSN 6130-00-801-2712
NSN 5990-01-328-8225
NSN 6110-00-524-3085
NSN 6645-00-932-1464
NSN 4140-01-260-8009
NSN 5960-01-395-9834
NSN 5985-01-287-3227
NSN 6645-01-616-7897
NSN 6610-01-014-3964