Phone: 07725 529 283

We use Dinitrol. Chassis sealant that lasts.

Most companies use Waxoyl. It hardens the paint and soon chips off. With ten years' experience sealing chassis in Northern Ireland, we do things right.

More info below...

What we do

Chassis sealant for your vehicle done in less than 3 days

We cover the vehicle; clean it down thoroughly with wire brush and sandpaper; etch with prime that kills rust; then apply our Dinitrol high pressure system by spray tip into every nook and cranny. Ready to collect in 2.5 days.

Better than Waxoyl

Unlike most Northern Irish companies, we use Dinitrol for impact protection.

Fast turnaround

Leave your vehicle with us Monday morning. Collect by Wednesday afternoon.

Experienced crew

With ten years' experience Anthony's hand picked a reliable team.

Other services we offer


All vehicles able to be sprayed. With decades of experience in creating a show room finish, we only use the best gear. Our spray booth oven recycles air so the process is environmentally friendly and efficient. We do paint corrections too.


Anthony's been passionate about restoring old tractors from a young age. He hates to see the classics left to rust and will happily take a look at a vintage model that needs a new lease of life. Before he was old enough to earn his license, Anthony bought, stripped down and lovingly restored his first car. Decades later, he's got restoration down to a fine art. Get in touch for a quote.

light mechanical work

Many services available including: alloy wheel refurbishments, plastic welding & dent removal. If in doubt, just ask.

why we do it

It's a passion project

Anthony O'Neill is Chassis Seal's founder. He's been working with cars since he was a cub. For 10 years he sealed chassis for Ulsterbus and Dublin Bus before starting a company of his own. Learning his trade, he worked for the best in the business: Gary O'Neill (for 15 years) and Dennison Commercials. He started life driving forklifts and painting cars aged 8 in his father's workyard. Now with his expanded business premises in Newtownabbey, he's fulfilling a lifelong vocation, pursuing entrepreneurship in the work he loves.


What they say


Land Rover Specialist

For more than four years, I have worked closely with Anthony on countless projects, from complete Land Rover re-paint jobs, including vehicles that were shipped to very demanding USA clients, to the complete restoration of two of my tractors. His work is from the top drawer, and I have projects scheduled in with Anthony stretching over the next 18 months and beyond. Highly recommended!

Red Land Rover with its engine carcass exposed inside Anthony O'Neill's Chassis Seal workshop.



First class job done by a professional.

I recommend Anthony who will deliver an excellent job, done to perfection and done in time!

A credit to the trade!

Contact Information

Find us here:

Chassis Seal
Co. Antrim
Northern Irleand


Phone: 07725 529 283