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 5935-01-125-5694
NSN 5915-01-358-4311
NSN 5910-01-475-1952
NSN 6110-01-416-7977
NSN 7035-00-225-6499
NSN 5965-01-342-2865
NSN 5945-01-325-2571
NSN 6620-00-123-4168
NSN 6105-01-363-5281
NSN 5925-01-577-2556
NSN 6150-00-007-1774
NSN 5935-01-352-5470