Cummins 6L engine 4086758 full gaskets set material details

This artical is about to tell you some details of Cummins 6L engine 4086758 full gaskets set material details

The head gasket’s Combustion rings type:

Usually have A and B type.
Type A:We call it triplet, it means 3 combustion rings together as a set. Each head gasket have two set combustion ring.
Type B: We call it single ring,it means each head gasket have 6 individual rings, each of them are separate.

Type A and Type B are same function, But some customers prefer one of them, it’s depends on the market preference.
Fortunatelly, Both of them are available at HAFID INTERNATIONAL.
Below is the photo for your better understand.

The head gasket body construction and material see below words:

Enhance wire ring inside of each combustion ring
FKM Rubber grommets
Body material: 2 layers metal and 3 layers graphite componsite together
graphite material purity:  ≧98% (While most of the market request this purity equal or above 88% is OK)
Below is the photo for better understand

The full gaskets set is much more complex

Because it’s included many parts together.
Here is our’s Hafid International material details.
We call it “A GRADE”.
graphite head gasket: graphite purity:  ≧98%
3 layers metal gaskets
Oil-resistant NBR rubber valve cover gaskets
FKM rubber valve steam seal
Interface MP-15 asbestos-free
While most markets they use the B GRADE material.
You can see the difference of them from below comparation photo.