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 6620-01-200-8176
NSN 4140-01-495-4981
NSN 5925-00-147-0749
NSN 5895-00-637-2658
NSN 5985-01-204-9040
NSN 5915-01-029-4920
NSN 6145-01-192-2087
NSN 5945-01-582-9737
NSN 6320-01-150-5378
NSN 6610-01-010-4516
NSN 5960-01-541-5734
NSN 6650-01-472-3751