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 5835-01-584-8538
NSN 5999-01-519-8595
NSN 6150-00-141-8793
NSN 5965-01-459-9659
NSN 6150-00-335-7189
NSN 4140-01-439-6490
NSN 5935-00-840-5485
NSN 6320-00-553-8427
NSN 6685-01-239-5610
NSN 6135-01-210-8715
NSN 6110-01-544-1805
NSN 5999-00-280-1706