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 6620-01-364-6454
NSN 5945-00-122-3650
NSN 5975-01-237-2163
NSN 6105-00-852-8197
NSN 6105-01-116-4283
NSN 5965-01-443-5490
NSN 5945-01-314-2349
NSN 5990-01-588-3999
NSN 5935-00-490-6417
NSN 5950-01-362-9022
NSN 5835-01-078-6126
NSN 6650-00-242-7961