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 5990-00-713-9016
NSN 6610-00-198-6870
NSN 6645-01-495-0939
NSN 6130-00-554-7852
NSN 6240-01-327-2449
NSN 5915-01-519-3287
NSN 5910-01-085-5960
NSN 5905-01-492-2947
NSN 5920-01-563-9980
NSN 5895-01-446-2094
NSN 5925-01-533-7003
NSN 6105-00-178-0094