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 6220-01-417-1446
NSN 5985-01-406-8707
NSN 6650-01-256-0304
NSN 6150-01-437-1588
NSN 5855-01-508-6917
NSN 5930-01-346-3445
NSN 2925-01-545-2717
NSN 2925-01-628-5296
NSN 6620-01-220-4178
NSN 2925-01-328-4394
NSN 6150-01-032-5026
NSN 6130-00-051-3793