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 6645-00-775-2172
NSN 6610-01-622-4326
NSN 5920-01-100-5571
NSN 5905-01-471-0400
NSN 5999-01-457-6589
NSN 5920-00-862-8734
NSN 5999-01-105-8572
NSN 6220-00-274-8541
NSN 5960-01-070-3655
NSN 5935-01-243-1672
NSN 5835-01-043-1576
NSN 5990-00-784-1254