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 5960-00-151-7576
NSN 5999-01-082-4488
NSN 6150-01-525-8505
NSN 6105-00-683-5459
NSN 5935-01-271-9142
NSN 5925-01-519-8048
NSN 5996-00-583-0607
NSN 6685-01-127-1234
NSN 6240-01-378-3722
NSN 5998-01-572-4227
NSN 6650-01-655-7373
NSN 5990-01-299-2014