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 5930-01-538-8803
NSN 5915-00-717-7092
NSN 5990-01-387-6114
NSN 5835-00-690-8898
NSN 6135-00-474-1397
NSN 4140-00-446-1024
NSN 5910-00-884-1104
NSN 6130-01-433-2215
NSN 5996-01-529-4964
NSN 6105-01-026-0165
NSN 5925-01-020-7706
NSN 5960-01-223-6202