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 5855-01-081-7594
NSN 5855-01-462-5150
NSN 5835-00-543-1325
NSN 6645-01-061-5516
NSN 6220-00-608-4283
NSN 5975-00-518-1733
NSN 5945-00-453-8704
NSN 6105-01-620-8658
NSN 5996-00-386-2236
NSN 5960-01-423-1085
NSN 5935-00-351-9775
NSN 5975-01-415-0918