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 5925-01-348-3360
NSN 5990-01-512-9129
NSN 5895-01-421-9346
NSN 5925-01-288-6243
NSN 2925-01-541-7217
NSN 5915-00-123-2183
NSN 6150-00-142-9142
NSN 5960-00-324-7291
NSN 5965-01-185-1507
NSN 6135-01-351-1131
NSN 5965-01-051-0126
NSN 5910-01-323-6725