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 2925-01-259-7092
NSN 5930-00-221-0981
NSN 6620-01-442-7951
NSN 6650-00-962-3568
NSN 6320-01-378-6191
NSN 5990-00-033-8128
NSN 5925-01-532-8894
NSN 5996-01-286-8076
NSN 5905-01-186-4208
NSN 6650-01-458-4597
NSN 5945-01-640-8926
NSN 7035-01-561-6331