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 6110-00-391-8932
NSN 5998-01-425-8045
NSN 5930-01-534-3263
NSN 6105-01-503-1856
NSN 6610-00-957-2464
NSN 6105-01-180-9884
NSN 5990-00-891-4085
NSN 5855-00-189-6066
NSN 5975-01-295-1619
NSN 5960-01-123-3313
NSN 5965-01-136-5657
NSN 5996-01-208-5045