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 5960-00-235-9251
NSN 5985-01-303-6107
NSN 5999-01-100-7572
NSN 6610-00-966-5154
NSN 5855-01-105-7793
NSN 5905-01-440-9845
NSN 5998-01-206-3756
NSN 5990-00-492-5063
NSN 5950-01-063-5163
NSN 6685-00-805-2671
NSN 6650-00-552-8377
NSN 6320-00-546-9249