This claims to be the only product of its kind, it combines with the antifreeze/water mixture and permanently seals blown head gaskets, warped heads
Steel Seal Topplockstätning - TIMPAB
HEAD GASKET SEALER, ENGINE SEAL,MCP, PREMIUM QUALITY INSTANT
Shop – Steel Seal Head Gasket Repair
Steel Seal Head Gasket Sealer 16 oz for 4 cylinder cars. Head gasket failure is a symptom, not the cause of overheating. The original source of
Steel Seal - Permanent Head Gasket Repair for all cars 16oz STEELSEAL
Bar's Leaks Head Seal Blown Head Gasket Repair 33.8oz
How to Use Steel Seal
Does Head Gasket Sealer Work?
STEEL SEAL HEAD GASKET SEALER ,MCP, REPAIRS BLOWN HEAD GA https
Steel Seal Blown Head Gasket Fix Repair Sealer - 6 Cylinder : Automotive