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 5935-01-179-4296
NSN 5935-01-657-8962
NSN 5945-01-329-3649
NSN 5935-00-862-7507
NSN 6135-01-205-5965
NSN 5915-01-104-4977
NSN 6610-01-597-1657
NSN 6320-01-006-6138
NSN 5996-00-973-4179
NSN 6105-01-359-8618
NSN 6610-01-642-1752
NSN 6240-01-462-1874