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Blackit dry rustproofing underseal wax
Blackit dry rustproofing underseal wax

Blackit dry rustproofing underseal wax

(Inc. 20% VAT)
(£8.33 Exc. VAT)
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(11 Reviews)

BLACKIT is a new formula of underbody rustproofing wax we developed as an upgrade top a typical waxoil / wet wax

Blackit dry rustproofing underseal wax

Blackit is a tough, dry, black wax for underbody blacking and protection.

offers a viable cost effective alternative to Wax Oil, wet waxes such as dinitrol, and hard underseals such as tetrosyl.

  • Great coverage and protection.
  • Dries properley.
  • Resists damage from cleaning
  • easy to apply
  • based on a marine hull coating.

Blackit dry rustproofing underseal wax

Product Types
1000ml Paint Tin
Normal paint tin for brush / roller / thinning and spraying

1000ML Schutz Undercoating Tin
Stubby Schutz Tin. These tins work with our FX10 Spraygun & FX11 Spraygun. The gun screws directly on. To use a normal Schutz gun with a stubby schutz tin, you need to trim the pickup tube 75mm shorter.

5000ml Paint Tin
Normal paint tin for brush / roller / thinning and spraying

400ML Aerosol (traditional)
Traditional aerosol loaded with Product.

400ML Buzzweld Powercan
The Aerosol powercan uses NO THINNER. as a result the can outputs the same amount of paint as a spraygun. This means less coats, a much higher film build and time saved. HOWEVER- the cans empty themselves very quickly. Protection VS coverage. When using a powercan you need to spray from further away. This can can also be used as a textured bedliner spray (comes with two nozzles).
11 Reviews:

Blackit dry rustproofing underseal wax
03 April 2021  | 

Excellent product

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Good value
19 March 2021  | 

Dries pretty hard and goes on easy. Have used quite a bit of it on my chassis. Works out pretty cheap. Not been able to get it to come out of the shultz gun with a lance on but goes on nicely with a brush or a shultz gun without the lance on.

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Top wax
02 October 2020  | 

What a pleasure this was to apply via a fx10 schults gun. I love the finish on my chassis and it is a great top coat to the RE primer 👌

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Really nice product to Use.
21 September 2020  | 

Was disappointed with both the two weeks delay for the under seal wax to arrive, and even more so that despite both two emails and a face book message it took Buzzweld nearly as long to get back to me and tell me where my order was!!

That aside, once it arrived I was very pleased with the product. It covered really well, looked uniform in its coverage and a single can lasted ages. Will see how it weathers, but currently I would recommend the product but give caution about the customer service.

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22 June 2020  | 

Left it in the sun for half an hour went on really well covered over the encapsulator coating no problem loos good .

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26 May 2020  | 

Another quality product. I have used this on my Defender chasis and choice to brush it on it went on easily and with no a lot of mess

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Blackit on a double cab pickup
24 May 2020  | 

Had this for a couple of weeks, not had the chance to do the prep and apply,
So, bank holiday weekend, steam clean under the motor, clean off crud with a big screw driver and leave to dry,
Give the first can a good shake and set to work, start at the back end of the pickup, it keeps going and going, amazing amount of material in a can, get down 3/4 of a chassis rail all sides with a decent amount of coverage,
Carry on around, 4 cans and got a good first coat on, looks the mutts, nice finish, decent cover and drying lovely in the sunny weather, quick cuppa and hopefully get another coat on,

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Blackit - aerosol
13 April 2020  | 

This is a really good product; especially for the price. It goes on really east, with decent coverage even after a single coat.

I was pleasantly surprised by the coverage. It seems to apply very evenly, which isnít common for aerosol underseal products, as usually the nozzle gets blocked which reduces the spread of the spray.

I have a medium sized hatchback, and I used 4x 400ml cans to do the front and rear arches, and seals. For a whole car, I would ideally have bought 6 cans

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07 April 2020  | 

Firstly Craig sent this out to me after I accidentally redecorated my driveway with CIO (which deserves a review in itself as this is brilliant customer service and not something any other company would do!), I used black it on my rather tatty axles and has transformed them, it is simple to apply with a brush and is lovely and thick, it was so nice to work with I would happily do the entire chassis however I have already stocked up on several tins of WAR!!
As a foot note my driveway is still hasn't started to rust!!

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12 July 2019  | 

The order was easy and delivery very fast happy with. only thing which got in the way was the "as a question icon which kept popping up right where I was typing , other than that happy to shop here yet again for good produces that work at the right price.

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Read all 11 customer reviews...

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IMPORTANT TERMS. Read before ordering.

Delivery & returns

All orders are sent to be delivered to you or a neighbour. By Ordering you are accepting responsibility for the delivery location. If this is not acceptable then you MUST leave a note on your order specifying signature only. We do not ship all orders for signature as most people are not available all day to take delivery.We send all orders with DHL.

Cut off time for same day dispatch is 12pm.

Please supply a mobile number to assist the courier.
DHL will attempt delivery twice, after this you may be charged an addition fee.
All orders will only be sent if the billing address matches the card details.
Please ensure someone is available to receive the delivery.
We can not be held responsible for any delays caused by DHL.
If you need assistance with your delivery please call 01454315588. Our staff will be more than happy to help.


We offer a 30 day money back return policy on all goods returned in un-used condition and original packaging. Unfortunately we can not offer refunds or exchange on mixed colours or aerosols to order.

All items must be returned to qualify for a refund. Upon receipt of your item we will check the item and notify you if we are able to process a refund by phone or email within 3 working days.

Once we have despatched your goods (or if you have collected them), you can return them for a full refund (including standard delivery charges) within 30 days of delivery (or collection) without giving a reason, as long as they are with their original packaging and unused. You will be responsible for returning the goods to us (and have to pay any costs involved) and we are allowed to reduce your refund if there is any damage to the goods caused by you handling them. We will make all refunds to the credit card, debit card or PayPal account used to place your order and we will pay you within 14 days of us receiving the goods you have sent them back to us.


We will make your colour to specification, however, when added to different products the colours will be represented differently. As an example Ral3020 in Raptor, 2K Direct Gloss, Basecoat, and GIO side by side will all be DIFFERENT, even though they are made with EXACTLY the same tint. Variance issues are non refundable. Please call us if you have any concerns. We do also try and filter out these issues by inspecting your order. Metallic colours are strongly affected


All cancellations must be provided as soon as possible via phone contact only. We cannot always view emails / messages in a timely manner. Your order can be cancelled on 01454315588 mon>fri 06:30>14:30.  Custom orders such as non stock items, and colours are made to order. If you wish to cancel an order that has a custom item on it, and we have already made it, We will not be able to refund for that item because we cannot return it to "stock".


Want something better? Checkout WAR SUPERWAX

What Is Stubby Schutz?