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 5855-00-973-5717
NSN 6320-01-585-8468
NSN 5925-01-301-1596
NSN 6620-01-628-0171
NSN 5925-00-321-8040
NSN 7035-01-027-1718
NSN 4140-01-478-0152
NSN 5935-01-627-2271
NSN 5905-01-422-7428
NSN 5925-01-029-3483
NSN 7035-01-469-5854
NSN 6150-01-447-3694