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 6240-01-029-5988
NSN 5835-01-619-6270
NSN 5945-01-215-1190
NSN 5855-00-357-1158
NSN 5905-01-268-1820
NSN 5960-01-128-4431
NSN 6130-00-326-3680
NSN 5950-01-124-2481
NSN 4140-01-415-1187
NSN 7035-01-145-5059
NSN 5915-01-393-4406
NSN 2925-01-018-1348