Looking for high-quality SPIRAL WOUND GASKETS? Our stainless steel expanded graphite gaskets, rated for Class 150, are built to last. Designed to BS 3381 specifications with windings made from ASTM A240 Type 316, these gaskets also feature a centering ring made from ASTM A285 Grade C and an inner ring made from ASTM A240 Type 316L. Designed for use with flanges conforming to ASME B16.5 and BS 1560 standards, our gaskets feature a raised face flange and are sized at 20 inches. Trust us for reliable, long-lasting gaskets that will help you get the job done right.