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 5925-01-400-3002
NSN 5925-01-199-6033
NSN 5998-01-183-6255
NSN 6105-01-265-0553
NSN 5965-01-537-0023
NSN 5975-00-079-0022
NSN 6130-01-219-2890
NSN 6145-01-111-9553
NSN 6320-00-110-8005
NSN 7035-01-297-9806
NSN 5935-01-270-4493
NSN 5998-01-647-6052