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 4140-00-468-5342
NSN 6610-00-661-1797
NSN 5925-01-378-6857
NSN 5935-00-924-7287
NSN 5915-01-492-6153
NSN 5910-01-306-2795
NSN 5895-01-406-8588
NSN 5965-01-196-1526
NSN 5855-01-152-3470
NSN 5905-01-553-7124
NSN 4140-01-125-5187
NSN 5975-00-067-7264