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 6145-01-021-9278
NSN 6110-01-252-1223
NSN 5990-01-224-8052
NSN 6130-00-246-6915
NSN 6150-01-370-4177
NSN 5998-00-620-9943
NSN 6145-00-350-0167
NSN 5945-00-001-7532
NSN 5925-01-442-3724
NSN 5915-00-540-8350
NSN 5960-01-495-0859
NSN 6685-01-186-4838