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 5930-01-422-7653
NSN 7035-01-078-6252
NSN 5920-01-647-5558
NSN 5965-01-434-4095
NSN 5920-01-021-6865
NSN 6130-01-549-7275
NSN 6685-01-456-1533
NSN 5935-00-203-5852
NSN 7035-01-153-1767
NSN 5985-01-451-4206
NSN 5935-00-073-8303
NSN 5925-01-340-1185