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 6650-00-563-3880
NSN 5915-01-411-3544
NSN 4140-01-241-7870
NSN 5985-01-361-4964
NSN 5990-01-154-7296
NSN 6650-01-084-9726
NSN 6650-01-367-4989
NSN 6610-01-512-8154
NSN 5990-00-611-1661
NSN 5935-01-452-0200
NSN 6130-01-426-2944
NSN 6240-00-533-1493