gaskets

Question:  “What measurments do you need to make gaskets?  Is it just the diagonal bolt pattern and the size of the opening?”

Tank Guru:  Usually what we need to make gaskets is the Outside Diameter, Inside Diameter, and thickness of the gasketing material regardless of whether it is a ring gasket or a full-face gasket.  Then for full-face gaskets we also need to know the number and size of the bolt holes, and the Bolt Circle Diameter.  For instance, we might spec out a 3” ANSI 150# gasket this way: 

7.5” OD x 3.5” ID x 1/8” thick full-face gasket with 4x ¾” holes, equally-spaced on a 6” BCD.