Tunas Antirust AB 4000 black is a coated layer that applied onto the vehicle underbody.
It protects a vehicle underbody from corrosion and cosmetically attractive black coating that provides insulation, sound deadening effect.
Most of the vehicle that already used on the road for 3-5 years will find out that the layer of antirust which applied by the vehicle manufacturer already “washed off”. It need to re-apply to prevent the vehicle underbody from start rusting.
In fact some brand new vehicle are NOT apply with the Anti rust undercoating due to the cost saving. (Check your brand new cars underneath and see what colour it is, with anti rust it supposed to be black).
Antirust AB 4000 black is a product that have been use and endorsed by a major car dealer as a anti rust undercoating
What you need to know
What are Antirust under-coatings?
Antirust under-coatings are chemical compounds usually applied to the undercarriage of a motor vehicle, hence the name.
Under-coatings may also be applied to other areas such as the trunk, wheel wells, etc.
I don’t use my car when there is flood. Would it still need Under-coating?
Many people think that undercoating only protects against corrosion or rust, but that is only one function of undercoating. Under-coatings are used for the following:
-Corrosion protection
-Abrasion resistance
-Sound deadening
-Cover welds and minor repairs
Even though you never use your car during floods, your car will still benefit from undercoating.
What is corrosion protection?
Simply put, corrosion protection is protection against rust.
What actually corrodes metal is oxygen present in the air. Water and other corrosive chemicals such as salt, battery acid, etc., speed up the reaction between metal and oxygen.
The extra protective layer of undercoating prevents contact of metal with air, preventing corrosion.
My car has several layers of paint when it was applied in the factory; that should offer ample protection, shouldn't it?
Your car would have good protection against corrosion.
However, paint could not resist abrasion, and because of poor road conditions, unprotected paint would suffer from stone chips, scraping against humps or rocks, pitting from gravel, etc. Eventually, a lot of paint would peel or scrape off to expose bare metal to corrosion.What is
Abrasion resistance?
Abrasion resistance is the ability to resist scraping. Abrasion (scraping) removes coatings, which exposes metal to corrosive conditions.
Rocks, humps, even gravel moving at high speeds, could have the worst abrasive effects on your car’s undercarriage.
What if I just use my car during good weather, that should prevent it from rusting, wouldn't it?
Regardless of weather, your car will be subjected to abrasion, which peels paint off, and eventually exposes metal to corrosive effects of the environment.
Undercoating becomes more important because you don’t normally see what is going on under your car.
Then if I have my car undercoated, I don’t have to worry about rust at all?
It would be wise to have your undercarriage checked occasionally.
Even the best undercoating could not stand up to constant abrasion from scrapes and harsh grinding against sharp rocks and humps, or severe road conditions.
A good undercoating will protect your car against rust for many years but this is not permanent—when you have your car checked, have the undercoating condition inspected and retouched if there are exposed areas.
What is sound deadening?
Sound deadening means reducing noise.
Undercoating, because of rubber content, muffles external noise from normal vibration during high speeds, and from adjoining parts moving against each other. This is an added benefit of undercoating – a quieter ride.
What should I look for in a good undercoating service?
As important as the undercoating itself, the substrate (surface) on which undercoating is applied should be properly prepared.
The area should be thoroughly cleaned to remove dirt and grease, and then completely dried to ensure a good foundation for the undercoating.
A good undercoating should have the following properties:
High rubber solid contents. This will make a flexible, chemical - resistant coating. A flexible, not brittle, coating will bend with the car metal during normal stress and will not crack. Chemical resistance offers protection against salt water, solvents, oil, gasoline, and other corrosive chemicals.
High coverage. This means a denser coverage of the surface. There are no “pinholes” wherein rust will begin to attack.
Tough finish. A tough surface offers better abrasion resistance.
What are internal coatings?
Internal coatings are wax-like compounds containing rust preventive chemicals, and are applied to areas inside cavities of a car, such as the space inside the hollows of doors (door skins), fenders and frame rails.
They work well in areas that are difficult to reach with undercoating. Internal coatings are soft and non-curing; they have to be so because they are applied in special areas such as window channels where an ordinary undercoating would cause clogging of the window mechanism.
Why do these areas need protection?
These areas are prone to have water trapped in them during rains, or even just after a car wash.
The trapped moisture becomes an ideal place where rust would start if the area were unprotected.
Is rust proofing a combination of undercoating and internal coating?
Rust proofing is a combination of undercoating and internal coating. But then it’s more than that. It’s an investment to protect your car.
When spraying underbody, care should be taken NOT to spray the following parts;
ØBrake discs or drums
ØExhaust components
ØHeat Shield
ØTransmission
drive shaft, etc.
We sell RM 30.00/liter(1-1.5liters enough to cover the average size of sedan car), plus the workmanship it might be turn to be RM100.00 percar. If you spent RM.80,000 on a new car, the cost on rust proofing would even be less than 2%. For as little as that, you protect your investment, save on worry about rust, and prolong the life of your car. When it is time to sell your car, you get a higher appraisal, a higher resale value!
Packing (200 liters, 18liters, 1 liter)
Contact us
We sell our products in 1 liter can to 204 liters.
We also do OEM and for those who interested to be a dealers and distributers are welcome.
Thank you for your visit,
If you have any enquiry(Quotation, Technical specification, MSDS) or need more information on our product, please do not hesitate to contact us.
TUNAS MARKETING (001848696-A)
Phone No : +6019-3588 084
Fax No : +603-8993 9087
