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 5996-01-633-7979
NSN 5930-01-371-0209
NSN 6620-00-266-2763
NSN 5965-01-573-2653
NSN 6105-01-162-0840
NSN 6145-00-466-2790
NSN 5920-00-312-7872
NSN 6240-01-645-6782
NSN 2925-01-086-5507
NSN 6240-00-015-3725
NSN 6685-01-634-0611
NSN 5910-01-459-9069