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 5960-01-456-1735
NSN 2925-00-785-9328
NSN 5910-00-855-0455
NSN 5999-01-386-2643
NSN 5905-00-473-3310
NSN 5999-00-105-7833
NSN 4140-01-498-1613
NSN 5990-00-995-6071
NSN 5935-01-278-5305
NSN 6130-01-400-6123
NSN 5960-01-270-9018
NSN 5915-01-515-8036