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 5835-01-128-9331
NSN 5996-01-545-3673
NSN 5998-01-146-9366
NSN 5975-01-152-2910
NSN 5965-00-630-7872
NSN 5905-01-092-8119
NSN 5925-00-739-8068
NSN 4140-00-140-7587
NSN 5915-01-316-4760
NSN 6610-01-320-6628
NSN 6135-00-240-3200
NSN 5999-00-542-0541