The Cometic HTS exhaust header gasket set for Ford 351 Windsor (with Dart heads) uses a graphite/Kevlar fiber facing mechanically bonded to a perforated stainless core for exhaust sealing. The facing material combines 75% graphite with Kevlar reinforcements for strength and durability. These asbestos-free gaskets are specified for demanding exhaust flange environments and resist common thermal stresses.
Cometic Ford 351 Windsor .060in HTS Exhaust Header Gasket Set - With Dart Heads