spiral wound gasket
Item: UG-660 P
metal Flat Gasket is machined from solid metal in a variety of shaps and designed for high pressure,high temperature or highly corrosive applications the most suitable material and shape
specification:
Material    Hardbess(HB)   T
 Carbon     900~120       530
 304,316    160           750
 5Cr1/2Mo   130           500
 Copper     50            400
 Aluminium  30            300

OEM are welcome.