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 5920-01-142-1836
NSN 6110-01-126-7149
NSN 5925-01-331-6994
NSN 5905-01-338-3468
NSN 5915-00-350-3430
NSN 6240-01-068-3491
NSN 6220-01-129-7462
NSN 6610-00-352-7004
NSN 5990-01-168-6797
NSN 5935-01-598-4313
NSN 5895-01-294-6315
NSN 5910-01-013-1441