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 5996-01-628-0425
NSN 5930-00-425-9803
NSN 5975-01-281-7270
NSN 5905-01-037-6873
NSN 6145-01-027-1454
NSN 5935-00-028-4139
NSN 5855-01-450-8820
NSN 5999-00-572-2215
NSN 6240-00-064-0182
NSN 5998-01-302-2367
NSN 2925-01-354-1752
NSN 5855-00-797-8217