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 5895-00-342-9581
NSN 5990-00-016-5648
NSN 5975-01-486-0481
NSN 5999-01-052-6216
NSN 6240-01-516-6243
NSN 5920-01-209-6368
NSN 5915-00-560-6011
NSN 5835-01-362-0305
NSN 6240-00-947-4719
NSN 6220-01-601-7445
NSN 6685-01-623-7694
NSN 5985-01-019-2741