Above all, engine sealing is critical, to keep things sealed and separated within an engine.

With, so many things like, engine oil, engine coolant, vacuum and combustion, it’s a tuff job.

When you think about engine sealing, most people think about, external leaks. But, gaskets and seals also prevent, the entry of, dirt and air, into the engine.

Engine sealing and resealing, is an often overlooked, but is actually, a very important part of maintenance.

So, the best way to care for the gaskets and seals in your engine is, to follow regular maintenance. Consequently, this includes, regular oil and filter changes, engine performance check-ups, and cooling system maintenance.

With engines now lasting as long as 150,000-plus miles, there’s little doubt that gasket technology has advanced. And, have also played, a significant part in the longevity and durability of today’s engines.

So, keeping these engines sealed, creates an even bigger job for engine gaskets and seals.

Todays List Of Engine Sealing Materials Include:

  • Viton
  • Neoprene Polychloroprene
  • Nitrile (NBR)
  • Silicone Rubber
  • Multiple Layer Steel (MLS) Head Gasket
  • Copper
  • Composite

Cylinder Head Engine Sealing Technology Advancements

So, the cylinder head gasket is arguably; the most important seal in the engine. Since the very first internal combustion engines were produced, gasket designers have used many materials, to seal the engine.

Some of these include:

  • Copper
  • Brass
  • Metal And Asbestos Composite
  • Impregnated Fiber
  • Graphite Composites
  • Multi-Layer Steel (MLS)

Consequently, Today (MLS) gaskets remain the automotive industry’s, preferred method of sealing the cylinder head and block.

Head Gasket Failures

So, with most OEMs choosing to use aluminum; rather than iron cylinder heads, the chance of a gasket failure is increased. Even though aluminum is lighter than iron, it has a much greater, thermal expansion rate. As a result, creating more stress on the head gasket.

Choose Your  Engine Sealing Help Topic Below


Blown Head Gasket – Head Gaskets May Fail In Several Different Ways

Cylinder Head Gasket Leaks – Know The Signs And Symptoms

Blown Head Gasket Symptoms – Learn About The 5 Common Symptoms

Head Gasket Leak – Engine Overheating Is Often The First Sign Of Trouble

GM 6.6L Duramax Diesel – How To Choose The Correct Head Gasket

Cylinder Head Resurfacing – All About Getting The Correct Surface Finish

Bubble Test – Used In Conjunction With A Cylinder Leak Down Test


Engine Misfire – Rough Idle On GM 4.8L, 5.3L, 6.0L Engines

Exhaust Manifold Leaks – Function – Failure Symptoms – Potential Damage

Intake Manifold Leaks – Manifold Leaks Spell Trouble For Your Engine

Abnormal Exhaust Noise – Common On 02-05 Ford 6.0L Diesel Engines


Oil Leak In Spark Plug Well – Know The Signs – What Can Happen

Valve Cover Gasket Leaks – Function – Failure – Warning Signs


Rear Engine Oil Leaks – Finding The Real Location Of The Leak

Rear Main Seal Alternatives – Many Older Engine Have Rope Seals

Oil Pan Gasket Leak – Diagnosing And Confirming The Leak


Head Bolts – Inspect And Never Reuse Torque To Yield (TTY) Head Bolts

Torque To Yield Bolts – (TTY) – What Exactly Are They


Valve Stem Seal – Controls Valve Lubrication As Well As Oil Consumption

Fuel Injectors – Will Usually Only Fail In One Of Three Ways

Valve Stem Seals – Failure Symptoms Under Different Conditions

Water Pump Failure – What Are The Common Failure Warning Signs

Rear Main Rope Seal – There Are Alternatives For Many Older Engines


Engine Oil Leaks – Finding Them – Tips And Recommendations

Engine Coolant Leaks – How To Find Them – How Bad Are They

Fluid Leak – What Is That Fluid Leaking Under My Car

Thank You !