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 6220-00-242-6550
NSN 6220-00-959-5698
NSN 5855-00-361-0167
NSN 6620-00-098-5652
NSN 6145-01-581-0527
NSN 6130-01-454-5212
NSN 5835-01-416-6449
NSN 5945-00-097-8064
NSN 5965-00-478-3442
NSN 5965-01-551-9557
NSN 5960-00-403-4617
NSN 6650-01-289-3901