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 5998-01-484-1554
NSN 7035-01-557-9714
NSN 5915-01-440-0192
NSN 4140-00-225-8586
NSN 5925-00-054-8656
NSN 5998-00-367-8427
NSN 6240-01-381-8713
NSN 6650-01-341-8097
NSN 6110-00-051-7949
NSN 6650-01-144-5351
NSN 6150-01-417-2643
NSN 6145-01-572-9428