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 5998-01-377-7196
NSN 5930-01-546-3465
NSN 6645-01-440-8624
NSN 5985-00-253-4708
NSN 5920-01-420-5768
NSN 5975-00-770-5634
NSN 5985-01-248-5798
NSN 6110-01-530-6212
NSN 6685-00-239-5700
NSN 5905-00-970-0693
NSN 6620-00-834-4801
NSN 6150-01-101-1246