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 6105-01-067-4739
NSN 6240-00-456-2578
NSN 5935-00-059-6506
NSN 5930-01-447-7303
NSN 6620-00-451-8783
NSN 5996-01-397-6286
NSN 5930-01-597-9048
NSN 2925-00-845-1480
NSN 5855-00-107-7993
NSN 5930-01-111-6768
NSN 5930-00-269-3740
NSN 6135-01-620-8216