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 5990-01-492-6575
NSN 5920-01-586-5328
NSN 6650-01-395-5991
NSN 6240-01-122-7391
NSN 5990-00-471-6998
NSN 5998-01-431-9034
NSN 5910-01-466-5909
NSN 5930-01-139-2917
NSN 6240-00-136-7168
NSN 5975-00-030-3026
NSN 6685-01-606-9171
NSN 6220-01-348-0677