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 6650-01-170-7993
NSN 6105-01-023-6822
NSN 4140-01-047-4093
NSN 7035-01-555-5260
NSN 5950-01-422-2924
NSN 6650-01-514-0240
NSN 5996-01-531-4212
NSN 5925-01-032-3461
NSN 5915-01-089-8809
NSN 6150-00-050-0910
NSN 5930-01-158-8241
NSN 5835-00-138-2601