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 5996-01-224-9842
NSN 6320-01-512-2031
NSN 5960-00-191-7448
NSN 5990-00-828-1771
NSN 6240-00-204-9355
NSN 5998-01-396-5218
NSN 5945-01-076-4801
NSN 5990-00-225-7764
NSN 6645-00-192-1152
NSN 7035-00-295-0451
NSN 5960-01-045-5823
NSN 5990-01-085-9117