Ring joint gasket machined from solid matel in a variety of shapes and designed for high pressure, high temperature or highly corrosive applications by selectng the most suitable material and shape Ring joint gasket is designed to withstand exceptionally high assembly loads over a small area, thus producing high seating stresses.

material	Code sample	Hardness(HB)	Temperature
soft iron	R23SI	90	530
carbon steel	R23CS	120	530
304(L) 321 316L	R23S304	160	750
5 Cr1/2 Mo	R23F5	130	500
Copper for 640PL		50	400
Aluminium for 640PL		30	300