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 5935-01-259-1396
NSN 5915-01-381-5267
NSN 5975-01-211-3346
NSN 6110-01-303-0839
NSN 6620-00-826-7238
NSN 6320-01-514-6141
NSN 2925-01-540-7389
NSN 5950-01-260-2382
NSN 6145-01-012-2098
NSN 6135-00-284-1406
NSN 6685-01-366-6956
NSN 6105-01-348-2974