Newsletter "Leaking Dino!"

Did you receive our newsletter with the topic "Seals" a few months ago?

If not, best register here: Newsletter subscription.

And here for everyone to read again:

Our Dino is leaking...

Dear Dino friend,

that’s what we will think when it comes to oil and water stains under our Dino. Then it is probably time to take a closer look and check the motor and transmission gaskets. Gaskets have to make sure that lubricants and cooling liquids stay where they belong. Considering that, in this newsletter we will focus especially on gaskets.

Flat gaskets
Back in the days flat gaskets were made out of oil soaked paper or asbestos in combination with different kinds of material, such as cardboard, rubber or textile.
At the beginning of the 1950s, the gasket technology was revolutionized and the company DuPont developed aromatic polyamides, which are also called aramids. Later on the company introduced them to the marked and referred to them as the brand „Kevlar“.
One of the characteristics of aramids is its’ tensile strength and its’ heat resistance (up to 400° celsius). Therefore they were suitable for replacing asbestos in brake pads and gaskets.

Fiber structure clearly evident

All the flat gaskets which are distributed by DinoParts, except for cylinder head gaskets, are made out of Klingersil C-4400. The material that Klinger GmbH (Limited company) from Idstein uses,
consists of aramid fiber that are thickened with NBR (nitrile rubber) and have a high level of resistance against mineral oils, fats and hydrocarbons.

A gasket is supposed to be as thin as possible, meaning that the proportion between width and
thickness should be 1:10 and shouldn’t undercut 1:5 in order to reach a sufficient surface pressure.
Depending on the installation site, we use between 0,5mm and 1,5mm.

Cylinder head gaskets
As a basis for our cylinder head gaskets we use AFM-22, produced by the company Victor Reinz.
This is where aramid fiber is also used and in combination with non-organic filler materials and elastomers as a binder is proceeded to a composite material and rolled on tanged and galvanised steel core.

Additionally, the surface is fully Viton coated by our supplier especially for Dinoparts. Thus, even the smallest material-unevenness is filled and eliminated and so especially in the edge regions a higher surface-density can be reached. For most models there is a choice between different thicknesses of the cylinder and head gaskets. Starting from 1,00mm for a higher level of density to 1,5mm as a standardized size to 2,00mm which serves as an emergency solution for cylinder heads or blocks which had already been planned or modified several times. The apertures for the cylinders are equipped with ring setters. Hence, a higher contact pressure in critical areas can be reached and at the same time a protection of the composite material against the hot fuel gases can be ensured. Due to production conditions, the ring setter is bigger on one side of the gasket than on the other side. Nevertheless, when it comes to installation, it is not important whether the broad side of the ring is in top position or on the bottom. Additionally, our oil duct holes in our gaskets are protected by a metal ring. As a result, our cylinder head gaskets are extremely reliable.

Producers of gaskets recommend a mounting without additional gasket material for both cylinder head gaskets and Klingersil material. Laying an additional thin bead with permanent elastic gasket around the water and oil ducts has proven to work. For cylinder head gaskets we recommend Reinzoplast and for other flat gaskets this kind of silicone sealant.

All our cutting dies for our gaskets are produced according to EU original samples and have the highest precision fit.

section of a DinoPart cylinder head gasket with ring setter for the cylinder and strengthening of the oil duct

O-seals
Besides flat gaskets, there is also a huge amount of radial shaft seals and o-seals installed in a vehicle.
Radial shaft seals are colloquially referred to as Simmerring (oil seals) in German. Though, it is a trademarked product name of the Freudenberg Sealing Technologies and was introduced by the inventor Walther Simmer.
Before the Simmerring (oil seal) was invented, ^stuffing boxes have been used in order to seal the shafts. In case of the Dresden invention of 1894, the shaft is guided in a socket. The packing set out of wax or sebum soaked felt, textile or leather is being pushed against a ring by using a glant nut, which reduces the sockets’ cross section. The density can be regulated according to how strong the gland nut is tightened. If the pressure is too high, the shaft will get too hot. If the pressure is not sufficient, the shaft will leak. Nowadays, stuffing boxes are still used when it comes to sealing drive shafts for ship’s propellers. Another option that existed back in the days was forgoing any kind of sealing and accept an oil loss - nowadays that would be just unconceivable. Modern DinoParts shaft seals and o-seals are usually made out of NBR (nitrile rubber) or FKM - better known as Viton, which is DuPonts’ product name. Original o-seals tend to crumble when it comes to removing them, where as our new gasket rings have a high level of abrasion resistance including oil, fat and hydrocarbon resistance.

You can obtain every kind of gasket at DinoParts, no matter if it is about a single gasket for the fuel supply or the cooling system or about different inspection-kits to complete gasket sets, which are used in the revision of the motor or the gear unit. Our gasket sets contain all the gaskets you might need for the mentioned ranges of application.