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 5920-01-030-1112
NSN 5910-01-154-0855
NSN 5915-00-240-7717
NSN 2925-00-555-8836
NSN 6145-01-491-0033
NSN 5835-00-905-7165
NSN 6110-00-202-2990
NSN 5950-01-386-7182
NSN 5895-00-905-2762
NSN 5905-01-518-0869
NSN 5855-01-461-0690
NSN 5930-00-497-1327