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 6620-01-540-6913
NSN 5910-00-298-1833
NSN 5910-01-132-4387
NSN 5975-01-475-6947
NSN 5950-00-364-8162
NSN 6320-01-443-8676
NSN 5975-00-244-0706
NSN 5835-00-441-5004
NSN 5915-00-999-2594
NSN 5910-00-291-3955
NSN 5965-01-395-0104
NSN 5895-01-480-7545