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 6135-01-581-8163
NSN 5998-01-410-1401
NSN 4140-01-189-4980
NSN 5835-01-103-7778
NSN 5965-01-357-8259
NSN 6130-01-528-9979
NSN 5835-01-123-8305
NSN 5930-00-061-5699
NSN 5925-01-409-2616
NSN 5975-01-056-5036
NSN 5935-00-297-8846
NSN 6620-01-378-3175