Cam & Groove Buna-N Gasket, 1-1/2 Inch

Absolutely, this gasket is made specifically for 1 1/2 inch cam and groove couplings, so it should fit just right.

For most cam and groove couplings built to the A-A-59326 or DIN 2828 standard, these gaskets will interchange without any issue. The 1-1/2 inch size falls in the range where that standard applies, so you're generally in good shape across manufacturers. If you're running a half-inch or eight-inch coupling, that's where interchange gets tricky since no standard exists for those sizes, but 1-1/2 inch isn't one of them.