Footnote refers to a specific part or application

Footnote #62

Gasket Material

To complement our high quality headers, we use Interface Solution HTX-900 gasket material.  A proven hi-performance exhaust gasket composite used extensively within the automotive high performance racing industry, where characteristics such as structural strength and high temperature load retention are required to withstand severe under-the-hood operating environments.  HTX-900 is a high density non-asbestos fiber metal core composite specifically designed for exhaust manifold, header and collector gasket applications. (1/16” thick)

Recommendation:  Use a very thin layer of High-Temp Silicone Sealer on each side of gasket.