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 5985-01-131-6250
NSN 5855-01-420-4988
NSN 5990-01-364-0813
NSN 5930-01-431-8709
NSN 6135-01-199-1185
NSN 5999-01-080-1294
NSN 6610-01-214-6680
NSN 5965-00-675-8799
NSN 5999-01-514-2553
NSN 5855-01-147-4785
NSN 6645-00-177-4729
NSN 5855-01-020-7982