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 6240-01-449-0300
NSN 5960-01-033-5071
NSN 5895-00-262-2796
NSN 5835-01-238-3381
NSN 5895-00-297-6689
NSN 4140-00-307-2732
NSN 6610-00-733-5830
NSN 6105-00-111-0851
NSN 5895-01-087-5127
NSN 2925-01-132-5827
NSN 5945-01-359-5262
NSN 5835-00-909-8088