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 6150-01-139-6546
NSN 5999-01-535-0435
NSN 5998-01-056-8737
NSN 6610-01-392-9620
NSN 6105-01-646-9806
NSN 6110-01-622-8962
NSN 6105-01-441-2255
NSN 5915-00-359-4102
NSN 5895-00-937-8274
NSN 5935-00-237-3251
NSN 5855-01-330-3669
NSN 5999-01-238-5006