Top 10 Steel Seal Head Gasket Repair

Discover our curated selection of high-quality products.

Last update: 12-06-2025

BLUE DEVIL HEAD GASKET SEALANT

Easy to Use no need for additional costs on anti freeze and flushes
Over 90% Success Rate
Permanently repairs most blown head gaskets, cracked heads, warped heads and cracked blocks

Specially developed to restore worn seals and gaskets and stop leaks
Stops leaks in manual transmissions and ensures gaskets and seals remain flexible.
Stops transmission fluid leaks
Non-corrosive and non-clogging.

PROLONG YOUR RADIATOR LIFESPAN: Contains anti-rust inhibitors to help prolong the life of radiators
PERMANENTLY REPAIR & SEAL LEAKS: Stress-Free, permanent repair for most leaks
QUICK REPAIR: Nitrox Steel Weld seals leaks in minutes, no spanners required
NO NEED TO FLUSH: This powerful formula mixes with ALL Anti-Freeze and can be added straight into the coolant system
LONG TERM PREVENTION: Steel Weld stays working, ready to repair any future leak

Steel Seal will work on all vehicles: cars, bikes, vans, pickups, 4x4s, tractors, lorries and boats.
Blown Head Gaskets
All Types of Head Gasket Failure
Warped Cylinder Head
Now compatible with all types of antifreeze and any vehicle with a water cooled system

Plextone Silicone Motor Repair High Temperature Seal Gasket Manufacturer (Black)
Typical applications: rear main bearing cap split line, flap key seal, differential cover, intake manifold, OHC cap, oil pan seals, side cover, thermostat housing, time cover, gear tray, valve cover seal, vibration damper, water pump cover seal, exhaust manifold at connection points.
High temperature and heat resistant from -80ºF to 600ºF.
Product features: -- Heat resistant and flexible from -80°F to +600°F (-62°C to +315°C) -- Excellent bond to a wide range of applications
Attention: Please read the instruction manual carefully before use.

PERMANENT REPAIR: Our advanced formula with 33% more sealing power than regular K-Seal, ensures a long-lasting, permanent seal for challenging leaks. Permanently fixes blown head gaskets, cracked heads & porous engine blocks in cars.
STOP HOLES & CRACKS: With just 1 step our unique formula with ceramic micro-fibres, will permanently seal leaks up to 0.64mm in size, without any adverse impact on the engine.
EASY TO USE: It requires no draining or flushing; just shake, pour & go - shake the bottle, add the fluid wherever you top up your coolant & run your engine as normal. For larger engines (HGV's / Plant) use 2 bottles.
VERSATILE COMPATIBILITY: Works with all types of coolant & compatible with a wide range of vehicle engine materials & heavy duty machinery. A permanent fix for the lifetime of the engine.
PROFESSIONAL-GRADE RELIABILITY: Trusted by mechanics, our sealer treatment delivers a durable & long-lasting repair. A cost-effective head gasket & block repair, enhancing the performance of your vehicle’s cooling system. We've sold millions worldwide & are independently verified by university testing to meet ASTM D3147.

NOW WITH IMPROVED SHAPE - Even more durable effect: repairs all types of side leaks in the engine. Classic symptoms: loss of cooling water, white smoke on the exhaust, oil in the cooling water, water in the oil, exhaust gas/pressure in the cooling system (plus follow the instructions in English). ::: Leak head gasket, cylinder head and engine block:::::::::: Suitable for all water cooled engines (car, truck, bus, SUV, tractor etc.)
Easy to use: Quick repairs + no disassembly + exchange of cylinder head gasket in the workshop and convince you with the result of Steel Seal. +++ Keep the recommended dosage: [Cylinder capacity up to 2.5 litres = 1 bottle]: [2.5 to 4 litre capacity = 2 bottles]: [4 litre cylinder = 3 bottles]. In case of high pressure in the cooling system: leave the cooling lid open during application.
PROTECTS COOLING SYSTEM: Unlike other "coolants", Steel Seal is 100% free of filling materials (fibres, granules, etc.). This prevents unwanted deposits and blockages in the cooling system. Due to its unique action (thermochemical bonding process), the repair remains permanent after successful application on the cylinder head gasket.
Preparation: The key is done: rinse the cooling system with clear water before application, if other Extended or Longlife mediums, additives or coolant have been used, or if the coolant has visible impurities. After applying Steel Seal, rinse the cooling system again with water and fill it with fresh coolant.