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 5945-00-116-5676
NSN 5965-01-461-7195
NSN 6685-00-452-6257
NSN 5925-01-175-5719
NSN 5910-01-378-8423
NSN 5935-01-263-0868
NSN 4140-01-550-0022
NSN 5920-00-378-1395
NSN 5998-01-245-8264
NSN 6145-00-067-7436
NSN 5960-01-462-1864
NSN 6240-00-643-4532