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 5925-00-736-0425
NSN 5925-01-008-3213
NSN 5915-01-044-5260
NSN 6650-01-220-2944
NSN 5855-01-486-9924
NSN 6110-01-295-5322
NSN 5975-01-553-5857
NSN 7035-01-116-6223
NSN 5960-01-052-9577
NSN 5996-01-345-5181
NSN 5910-01-598-1276
NSN 5945-00-343-8447