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 5945-00-101-0731
NSN 5905-01-646-6528
NSN 5990-01-378-5443
NSN 5920-01-259-3096
NSN 6240-01-612-8756
NSN 6620-01-093-1383
NSN 6610-01-326-0119
NSN 5930-01-400-0892
NSN 5998-01-108-7111
NSN 6150-00-278-1294
NSN 5895-01-074-0802
NSN 5950-01-250-3687