|
|
| 1. O-rings for Mechanical Seals |
Other properties
Click on the links for further details.
O-rings in mechanical seals are required to be resistant to different kinds of chemicals at the same time. AFLAS® has excellent chemical resistance which FKM does not have. |
|
The above-mentioned illustration is a product made from CHESTERTON. |
| 2. O-rings for Marine Engine |
Other properties
Click on the links for further details.
Coolant inside large diesel engines contains anti-corrosive additives and some of these can damage FKM. Because of this, higher cost FFKM is sometimes used. However it is known that leakage problems can occur due to its poor elasticity.
AFLAS® has similar chemical resistance to FFKM and better elasticity than FFKM. AFLAS® not only has a cost advantage but also a longer service life. |
|
 |
| 3. O-rings for Steam Resistance |
Other properties
Click on the links for further details.
FKM will harden if it comes into contact with steam which contains anti-corrosive, even if the steam contains only a very small amount of anti-corrosive. AFLAS® has excellent steam resistance and has been found extremely reliable in this application. |
|
|
| 4. O-rings for downhole Application |
Other properties
Click on the links for further details.
O-rings are exposed to corrosive gas like H2S, high temperature steam or basic mud in this application. Rubber parts made of AFLAS® survive longer under these harsh conditions. |
|
|
Other properties
Click on the links for further details.
AFLAS® dipolymer shows excellent electrical properties and heat resistance. AFLAS® is widely used for heat resistant rubber cable in automobiles, trains and electric appliances. |
|
 |
| Transmission Seals for automotive. |
Other properties
Click on the links for further details.
AFLAS® has excellent chemical resistance
against additives in engine oils, transmission oils or heat resistant
greases. FKM hardens in these fluids, but AFLAS® keeps its elasticity
for longer. |
|
 |
| AFLAS®
can be extruded. AFLAS® hoses provide
excellent chemical resistance which is not possible with
FKM. It is used not only in automotive applications but
also in the chemical industry. |
Other properties
Click on the links for further details.
In Japan, Blow-by gas from diesel engines used to be released into the surrounding environment, but in order to reduce hydrocarbon emissions, Blow-by gas must now be returned to the intake line.
The turbo hose between the turbo charger and the intercooler is made from silicone rubber currently. Blow-by gas contains a small amount of engine oil mist and silicone rubber has poor resistance to oil. Therefore engine manufacturers are looking to replace it with fluoroelastomers.
Engine oils contain several chemicals, dispersants, oxidation inhibitors and abrasion inhibitors, etc. Some of these additives attack FKM at high temperatures and make FKM's surface brittle. Turbo charged air contains a small amount of engine oil mist, which contains these additives. After prolonged exposure, FKM turbo hoses may crack. AFLAS® has excellent resistance against these additives. Therefore it is thought that AFLAS® is a better choice for this application. |
|
 |
 |
|
(C)Copyright ASAHI GLASS CO., LTD. 2005-2007. All Rights Reserved. 
