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 5855-00-256-5562
NSN 5999-01-469-7167
NSN 5895-00-005-8758
NSN 5930-00-104-2749
NSN 6240-00-452-5241
NSN 5835-01-486-4191
NSN 6110-01-448-9646
NSN 5996-01-288-5955
NSN 5935-01-444-4236
NSN 5996-01-537-9237
NSN 5930-00-042-6538
NSN 5945-01-625-0708