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 6620-01-324-2817
NSN 5965-00-156-8562
NSN 6150-01-458-5932
NSN 6320-00-242-3300
NSN 6240-01-249-9840
NSN 6620-00-490-1229
NSN 6105-01-099-0242
NSN 6645-01-094-8917
NSN 5925-01-566-7514
NSN 6320-01-354-6204
NSN 6145-01-423-4477
NSN 5930-01-140-6079