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 6110-00-744-1301
NSN 5835-00-823-6116
NSN 5915-01-523-0737
NSN 5935-00-158-5541
NSN 6645-00-492-6119
NSN 2925-01-484-8556
NSN 6110-01-514-3977
NSN 5935-00-914-9666
NSN 5910-01-242-9792
NSN 6135-01-009-4929
NSN 6320-00-225-7013
NSN 6220-01-204-8916