Metallic gasket
Ring joint
Size
According to ASME B16.20: Ring Number= R, RX, BX
Grade
Soft iron / low carbon / type 304 / type 410
Spiral wound
Size
According to ASME B16.20: NPS= 1/2 to 48
Class
#150 #300 #400 #600 #900 #1500 #2500
Grade
Carbon steel / 304 L SS / 316 L SS / Monel 400 / Nickel 200 / Inconel 625
Metal jacketed
Size
According to ASME B16.20: NPS= 1/2 TO 48
Class
#150 #300 #400 #600 #900 #1500 #2500
Grade
Aluminum / Carbon steel / Copper / Inconel 625 / Stainless steels
Grooved metal with covering
Size
According to ASME B16.20: NPS= 1/2 TO 48
Class
#150 #300 #400 #600 #900 #1500 #2500
Grade
Carbon steel / 304 L SS / 316 L SS / Monel 400 / Nickel 200 / Inconel 625
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