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 5935-00-452-2221
NSN 6240-01-596-3183
NSN 6620-01-032-3937
NSN 5915-01-100-7062
NSN 5935-01-181-6661
NSN 5925-00-999-9320
NSN 6110-01-371-1978
NSN 6150-01-333-6941
NSN 5985-00-151-4538
NSN 6650-01-412-4217
NSN 5895-01-364-1017
NSN 6110-01-459-7236