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 5985-01-103-5680
NSN 5835-00-469-3395
NSN 6620-01-472-6461
NSN 6240-01-278-8802
NSN 5925-00-559-7527
NSN 6105-01-180-0258
NSN 6145-01-401-3713
NSN 6610-01-539-0014
NSN 6150-01-604-0488
NSN 5925-01-485-5070
NSN 5998-00-204-3091
NSN 5930-01-052-4482