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 5855-00-327-2112
NSN 5905-01-631-5804
NSN 5975-00-916-5940
NSN 6320-01-439-5264
NSN 6145-01-023-2011
NSN 5996-01-537-4157
NSN 6150-01-392-0554
NSN 5895-01-303-7562
NSN 7035-01-126-6023
NSN 6620-01-217-0559
NSN 5855-00-361-0167
NSN 5975-00-793-5550