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 5835-00-233-6327
NSN 2925-00-156-8963
NSN 5935-01-298-5293
NSN 5996-00-878-0273
NSN 6610-01-446-5975
NSN 7035-00-300-3208
NSN 5910-00-615-0998
NSN 6320-01-484-7734
NSN 5975-01-602-8367
NSN 4140-00-274-9638
NSN 5950-01-483-6849
NSN 6105-01-437-8875