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 6320-01-176-8367
NSN 5915-00-085-2408
NSN 6220-01-509-5946
NSN 6620-01-106-2814
NSN 5960-01-023-8800
NSN 5999-00-189-0772
NSN 5930-01-124-2586
NSN 5998-00-139-1442
NSN 2925-00-146-0179
NSN 5925-00-297-8821
NSN 6650-01-132-6860
NSN 5920-01-479-7706