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 2925-00-456-7627
NSN 6610-00-495-9053
NSN 5996-01-102-1246
NSN 5998-01-103-4356
NSN 5935-01-595-8956
NSN 5945-01-463-4210
NSN 6320-01-659-2819
NSN 5835-00-111-3419
NSN 6685-00-538-2799
NSN 6620-00-466-2314
NSN 6645-01-169-3978
NSN 6240-01-580-0419