Product Name: ASME B16.20 Spiral Wound Gaskets, RF
Size: 3/4 Inch, DN20
Pressure: Class 1500 LB, PN250
Standard: ASME B16.20
Material:
Inner Ring: SS 316L
Filler: SS 316L + FG
Outer Ring: SS 316L
Source: https://www.landeepipefitting.com/asme-b16-20-sw-gaskets-ss-316l-3-4-inch-dn20-1500-lb-rf.html