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 7035-01-193-2667
NSN 6135-01-424-8130
NSN 5930-00-175-4699
NSN 6145-00-099-8986
NSN 5835-00-170-5238
NSN 5925-00-135-3440
NSN 6110-01-161-8065
NSN 5925-00-547-7739
NSN 5945-01-468-1290
NSN 6240-01-572-9979
NSN 2925-01-560-0517
NSN 5915-01-178-7523