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 6150-01-114-7119
NSN 5855-01-429-8702
NSN 6685-01-086-0246
NSN 5965-00-317-1679
NSN 5925-01-232-7979
NSN 5925-00-078-2842
NSN 5999-01-519-9353
NSN 5990-01-168-6797
NSN 5998-00-100-0162
NSN 6135-00-078-9931
NSN 5920-00-856-9663
NSN 5965-01-532-1198