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 5965-00-204-8513
NSN 5975-01-254-8555
NSN 5895-01-204-7658
NSN 6685-01-497-6193
NSN 5996-01-605-0950
NSN 5960-01-328-1533
NSN 6105-01-608-3974
NSN 5935-00-646-2256
NSN 6105-00-408-3397
NSN 5998-00-203-1232
NSN 7035-01-644-3225
NSN 6220-01-244-5329