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 5960-01-242-9801
NSN 6685-00-366-6997
NSN 6220-00-394-5762
NSN 6620-00-937-5931
NSN 5930-00-161-8121
NSN 6620-01-138-6132
NSN 5935-01-415-0887
NSN 6135-00-062-5080
NSN 5996-01-361-1451
NSN 2925-00-101-7972
NSN 5925-00-727-3832
NSN 5925-01-617-5089