Clean, flat surfaces are essential to a good seal. However, we all know that that's not always the case, and the best way to seal a warped or uneven exhaust is with SCE Pro Copper embossed exhaust gaskets. These copper exhaust gaskets feature an embossed O-ring around the exhaust port to increase sealing pressure for a tight, leak-proof seal, even on imperfect surfaces. Whether your ride is a motor home or hot rod, or is used for towing or racing, you'll appreciate the trouble-free seal of SCE Pro Copper embossed exhaust gasket. Sold as a pair.