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 5915-00-830-4927
NSN 5920-00-185-9587
NSN 5925-01-345-0992
NSN 6130-01-391-1839
NSN 5998-00-953-4063
NSN 5990-01-525-2250
NSN 5925-01-435-1402
NSN 5975-00-119-1486
NSN 5950-00-963-9225
NSN 5855-01-117-7207
NSN 5960-00-111-8456
NSN 5999-00-050-7773