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 6150-00-346-8150
NSN 5950-00-142-9078
NSN 7035-00-205-1932
NSN 5905-00-689-7249
NSN 6135-01-238-2878
NSN 5960-01-563-4797
NSN 4140-00-765-7748
NSN 5905-01-495-0988
NSN 5855-00-586-6255
NSN 5930-00-105-9774
NSN 6110-01-370-4984
NSN 5925-00-452-1270