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 6620-00-841-0346
NSN 5950-01-344-9619
NSN 5930-00-036-0381
NSN 5998-01-111-7497
NSN 5985-01-054-3568
NSN 4140-00-843-1300
NSN 6110-01-461-0649
NSN 6620-01-246-5895
NSN 5975-01-212-2761
NSN 5965-01-364-1232
NSN 5996-01-113-6362
NSN 5960-01-409-1917