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 5915-00-211-1253
NSN 5910-00-309-3450
NSN 6130-01-044-7373
NSN 5915-01-065-9775
NSN 5905-01-581-1060
NSN 5855-01-494-8838
NSN 5905-00-453-2596
NSN 5985-01-562-4134
NSN 5915-00-617-9477
NSN 5998-00-246-4422
NSN 2925-01-212-1040
NSN 6105-01-461-2347