Intake manifold gasket sets may contain a small tube of RTV. Only apply the sealant in the manner and locations directed. In cases where a sealant is needed for installation of a Fel-Pro gasket, a FITĀ® Form will be included, along with the proper sealant.Also, RTV can extrude out when the gasket is compressed, and it could end up in an oil or coolant passage and restrict or block flow. Sealants can add thickness which creates uneven clamping force since the gasket will not be able to seat properly. RTV can act as a lubricant and cause the rubber gasket to slip out of place and split, creating an opportunity for leaks. The sealer can chemically attack the rubber sealing beads and degrade them.Using RTV on the gaskets with Fel-Pro's propreitary rubber or silicone sealing beads causes multiple issues: To ensure these technologies work in the way they were designed to, these intake manifold gaskets must be installed on a clean, dry surface with no additional sealants used. Fel-Pro's proprietary rubber resists all fluids and features multiple sealing beads that provide additional sealing and compensate for rough corroded gasket flange surfaces. They have an aluminized steel carrier that resists corrosion and is not susceptible to degradation from exposure to fuels, oils and coolants. PermaDryPlus intake manifold gaskets are designed to provide a permanent seal. Intake manifold gaskets have been problematic leak areas for several years now.
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