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 6610-01-005-1190
NSN 6620-01-435-7083
NSN 5920-00-366-0111
NSN 5855-01-592-3128
NSN 5999-00-630-2444
NSN 5910-00-893-2493
NSN 6150-01-597-7368
NSN 5905-01-631-4302
NSN 5985-01-355-9715
NSN 6685-01-631-5997
NSN 6135-01-633-8502
NSN 5985-01-371-3812