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 5935-00-597-5055
NSN 6320-00-098-2858
NSN 5920-01-293-3071
NSN 6610-01-271-7593
NSN 5965-01-555-8007
NSN 7035-00-915-5798
NSN 5945-01-325-5609
NSN 6145-01-514-0593
NSN 5945-01-486-9592
NSN 7035-00-104-7613
NSN 4140-01-607-7441
NSN 5945-00-727-7867