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 6240-00-010-7334
NSN 5905-00-282-2504
NSN 5920-01-263-0685
NSN 5910-00-505-2258
NSN 5930-01-095-9342
NSN 5895-01-054-3661
NSN 7035-01-406-5232
NSN 5920-01-463-3156
NSN 2925-00-461-4954
NSN 6320-00-823-2015
NSN 5905-01-294-4651
NSN 4140-00-616-1347