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 5925-01-110-8835
NSN 6240-01-342-3274
NSN 7035-01-435-7962
NSN 5998-01-260-0171
NSN 7035-01-357-4928
NSN 5996-01-078-9803
NSN 6645-00-276-1123
NSN 5935-01-151-9613
NSN 5990-01-608-9271
NSN 6620-01-391-6499
NSN 5985-01-487-1313
NSN 5998-01-378-2115