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 5998-00-140-7777
NSN 5975-01-339-0101
NSN 5930-01-432-1895
NSN 7035-01-241-9908
NSN 6240-01-289-2805
NSN 5985-00-402-9309
NSN 5935-00-415-1919
NSN 6220-00-951-6900
NSN 6135-00-170-8819
NSN 5999-01-142-6168
NSN 5835-01-424-0054
NSN 6130-00-097-9674