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 5915-00-997-8360
NSN 6610-00-227-8846
NSN 6645-01-228-2127
NSN 5835-00-289-9080
NSN 6685-00-375-6186
NSN 5895-01-024-3154
NSN 6135-00-738-5571
NSN 4140-00-554-9461
NSN 5945-00-759-9074
NSN 5998-01-418-2953
NSN 5925-01-098-7829
NSN 5915-00-076-0129