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 5925-00-925-2164
NSN 5855-01-523-4058
NSN 5855-00-494-9581
NSN 6220-01-591-4996
NSN 5925-00-828-5304
NSN 5960-00-034-7925
NSN 5945-00-935-5237
NSN 6320-01-161-6640
NSN 6620-00-730-8699
NSN 5996-01-027-0702
NSN 6685-01-546-0804
NSN 6135-01-504-4309