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 6240-01-431-5790
NSN 5960-00-372-4876
NSN 6240-01-602-0274
NSN 5960-01-165-1956
NSN 6610-01-141-7014
NSN 2925-01-583-0736
NSN 5915-01-448-9307
NSN 5935-01-472-2065
NSN 5998-01-585-7121
NSN 2925-01-608-6895
NSN 5895-01-374-2592
NSN 5975-01-408-7479