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 7035-01-434-0606
NSN 6220-00-458-4633
NSN 4140-01-227-1342
NSN 5915-00-518-1644
NSN 6620-00-820-9616
NSN 6145-00-989-3199
NSN 5910-01-423-9201
NSN 5950-01-391-2547
NSN 5998-01-411-4444
NSN 6135-00-196-5267
NSN 5965-01-295-9842
NSN 6145-01-126-2978