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 6145-01-179-5389
NSN 5895-00-771-2044
NSN 7035-01-268-0933
NSN 5925-01-581-7386
NSN 5950-00-172-8093
NSN 5920-00-164-1147
NSN 5998-00-284-3804
NSN 6645-01-055-0373
NSN 6650-01-156-4660
NSN 6650-00-134-5130
NSN 6645-01-629-9657
NSN 5999-01-539-1870