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 6650-00-144-4555
NSN 5960-01-142-1995
NSN 6150-01-529-6368
NSN 2925-01-263-3638
NSN 5996-01-256-8630
NSN 6620-01-386-5543
NSN 2925-01-067-4446
NSN 5935-00-104-5901
NSN 6685-00-938-2808
NSN 5835-01-424-0054
NSN 7035-01-089-4485
NSN 4140-00-937-6838