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 6610-01-437-2506
NSN 5996-00-434-5413
NSN 5925-01-384-3402
NSN 6320-01-609-9763
NSN 6135-00-995-1089
NSN 5999-00-813-9503
NSN 6620-01-014-7192
NSN 5935-01-382-9867
NSN 6135-00-823-3034
NSN 6150-01-576-4718
NSN 7035-01-432-2424
NSN 7035-01-334-5855