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 5905-01-300-3683
NSN 5998-00-811-8880
NSN 5930-01-492-5858
NSN 5985-01-443-8591
NSN 5855-00-455-6070
NSN 5935-00-259-7003
NSN 5945-01-303-6361
NSN 5935-01-421-4575
NSN 5855-01-341-7320
NSN 2925-00-764-0167
NSN 5835-01-286-6499
NSN 6685-01-571-7743