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 5905-01-483-1338
NSN 6145-01-132-1165
NSN 6610-01-162-8258
NSN 6320-01-442-8604
NSN 6105-00-891-9768
NSN 6220-01-459-6337
NSN 6620-01-178-4771
NSN 6650-00-629-8027
NSN 5998-01-571-6920
NSN 5835-00-222-3956
NSN 6145-00-494-2847
NSN 5999-01-408-7276