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 6110-00-925-0480
NSN 5905-00-837-6903
NSN 2925-01-175-1217
NSN 5985-01-100-4910
NSN 6145-01-382-4728
NSN 5855-00-149-0766
NSN 6685-00-938-5649
NSN 6685-00-090-0347
NSN 5835-00-850-1475
NSN 6145-00-729-3702
NSN 5999-01-066-8392
NSN 5905-00-224-5169