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 6145-01-346-3918
NSN 6240-01-646-5509
NSN 6220-00-586-6645
NSN 2925-00-435-5604
NSN 5910-00-468-6300
NSN 6150-01-057-7263
NSN 5835-00-834-1286
NSN 6320-00-790-4844
NSN 5925-01-212-1492
NSN 5960-01-336-5459
NSN 5925-01-111-7562
NSN 6610-00-848-4764