Unituff: Unique Product, Unique Story

seal n peel

Back in the mid-1940’s just before the end of World War 2, an American company called Better Finished and Coatings (BFC) developed several flexible coatings based on PVC resins that were all solvent-based. Using the name “Liquid Envelope,” this was sold extensively all over the United States. At the end of World War 2, Liquid Envelope coating was used considerably for the mothballing of military equipment such as tanks, jeeps, trucks, aircraft, and even warships.


In 1950, BFC signed a manufacturing agreement with an Australian company, H.G. Herring, based in Sydney, NSW. H.G. Herring is also known for being the first manufacturer of plastic buttons for clothes in Australia. In 1961, H.G. Herring sold its raw stock, equipment, and the BFC manufacturing agreement to Dominion Plastic Industries. Dominion’s founder, Mr. A.M. ‘Ken’ Sutherland then moved the business from Sydney to Melbourne and resumed operations there. Since Mr. Sutherland bought the Herring licensing agreement, he changed the name of Liquid Envelope to “Seal’n’Peel” and another product, Envelon. Both products are still being manufactured in Australia today with modifications to its formulation that is required today to meet legal requirements, raw materials, and supply changes.


Up until early 2000, all seal n peel products were air-dried and solvent-based. In the span of the past 15 years or so, more products have been added to the Seal’n’Peel range of products. New water-based products have been developed to meet market demands and legal/regulatory requirements for specific situations.


Seal n peel found its specialised niche when it was selected to supply the Defence industry over many years in the coating of aircraft electrical gear and the mothballing of aircraft for the RAAF (Royal Australian Air Force). Of particular concern are parts that must be waterproofed/coated and yet remain accessible for maintenance or inspection.

The best example is the electrical components encased in metal boxes and installed in the nose of F-111C Aardvark aircraft. It was very vital that no moisture or condensation should enter said metal boxes when the aircraft was at high altitude or flying at supersonic speed. It would be unimaginable to have a sudden electrical “short” while the aircraft is in flight.


In other industrial areas, seal n peel has been used to prevent rusting on both polished or machined surfaces. Another example is at the former Hazelwood Power Station in Victoria. A huge rotating excavator scooping device made by Krup Engineering was manufactured in such a way that should a piece of equipment need replacing, the machine was stopped and the said item unbolted and quickly replaced. All metal parts were thus manufactured to an exacting standard in high tensile steel and then coated with Seal’n’Peel. When the metal part was required to replace another, the Seal’n’Peel coating was easily stripped away like banana skin to reveal a shiny and rust-free metal part ready to be utilised.


With the success of Seal’n’Peel 452 – now called Unituff 452 – the Oil and Gas sector in Australia in its development stages needed another requirement for stainless steel, brass, and other alloy materials. From Unituff’s research and development was born Unituff OGS, a rust preventative coating specially made for stainless steel and other alloys.


Interested to learn more about Unituff 452 and OGS and its uses in every industry? Visit the Unituff website at https://unituffglobal.com/.