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 5935-00-517-9638
NSN 5915-00-740-4336
NSN 5960-01-438-0245
NSN 5960-01-231-3484
NSN 5985-01-216-1473
NSN 6620-01-152-0936
NSN 6320-00-149-7570
NSN 4140-01-392-6165
NSN 6130-01-089-6467
NSN 5915-01-040-8164
NSN 5985-00-613-9286
NSN 6685-01-660-3819