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 5920-01-047-4682
NSN 5925-00-159-1544
NSN 6620-00-828-3842
NSN 5985-00-301-3814
NSN 5999-01-500-1835
NSN 5895-01-393-4154
NSN 5945-01-428-6300
NSN 5985-01-043-0141
NSN 5915-01-110-3277
NSN 6645-00-066-6868
NSN 5920-01-498-4690
NSN 6620-01-065-3742