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 5960-00-584-4553
NSN 6320-00-539-9283
NSN 6240-00-080-2012
NSN 6130-01-369-6817
NSN 5920-00-269-6178
NSN 5835-01-043-1576
NSN 5996-00-792-6512
NSN 6220-00-635-8818
NSN 4140-00-987-2925
NSN 4140-01-519-9343
NSN 5915-01-453-4298
NSN 6685-01-254-7972