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 5998-01-249-3057
NSN 6685-01-576-9843
NSN 5910-01-114-4271
NSN 5925-00-069-6722
NSN 5999-01-656-5582
NSN 5920-01-501-0678
NSN 5910-01-363-9123
NSN 6320-01-176-8367
NSN 6645-01-046-2804
NSN 5945-00-843-5199
NSN 5920-00-913-3728
NSN 5855-01-435-8075