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 2925-01-290-8208
NSN 5915-00-115-8482
NSN 6135-01-439-8669
NSN 6220-00-187-6072
NSN 5998-01-165-0090
NSN 5945-01-494-9374
NSN 6130-00-940-7866
NSN 5960-01-553-4557
NSN 5925-01-607-3296
NSN 5935-01-447-2461
NSN 5985-01-448-9550
NSN 5950-01-416-8604