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 5999-01-525-9921
NSN 6685-00-111-1123
NSN 6130-00-776-0157
NSN 6150-01-381-2521
NSN 6135-00-660-8654
NSN 5998-00-991-0168
NSN 5999-01-423-1030
NSN 6105-01-383-4501
NSN 5935-00-753-1070
NSN 5910-01-131-4459
NSN 6150-00-932-4036
NSN 6105-00-831-6113