With their built-in integral combustion and coolant seals, patented SCE ICS Titan copper self-sealing head gaskets require no additional sealants. That means that you get user-friendly installation, combined with reliable fluid sealing, plus the unbeatable strength of solid copper gaskets. The fluid seals are bonded to both sides of the gaskets and cleverly offset to allow the annealed copper of the gaskets to deform around them for a better seal and to prevent blowout. The built-in combustion seals, found only on the ICS Titan gaskets, take the place of the O-ringed blocks or heads, allowing for the use of power adders or extreme static compression ratios. The gasket body is split at the bore opening to allow for the insertion of a stainless wire O-ring, forming a primary seal, with upper and lower flanges forming a secondary combustion pressure seal. Recommended for naturally aspirated gas or methanol racing engines, these one-of-a-kind copper ICS Titan head gaskets are suitable for medium-to-heavy turbocharged, blown, or nitrous-injected engines as well. For ultimate sealing strength every time, introduce your engine to SCE ICS Titan copper head gaskets.