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Case Studies

For over 20 years, USI has provided protective coatings and corrosion prevention products proven to protect our nations most critical infrastructure and industrial machinery. Along the way we have documented many projects and pain points we have been able to help our partners repair, protect and upgrade.

Tech Talk Lining Systems for Dynamic Cargos

Tech Talk with Trevor Newell, Seal For Life Industries 

“Lining Systems for Dynamic Cargos”

Goal: Define the challenges of selecting the proper liner coating for dynamic cargo storage and containment and review solutions that meet service-specific challenge.

What are Dynamic Cargos
Challenges to Address in Liner Selection
Available Technologies (Formulation and Thin Film vs. Thick Film)
Site Specific Considerations
Inspection & Testing


What are Dynamic Cargos: A cargo that is characterized by constant change, activity or progress.
– The actual cargo may change
– The environment may change
– A process may change


It’s not always easy to adapt to CHANGE!

Typical Cargos:
– Cruise Oil (Sweet or sour)
– Refined Petroleum Products (Clean, Dirty, Contains MTSB)
– Organic Chemicals (Alcohols, hydrocarbons, ketones)
– Inorganic Chemicals (acids, caustics)
– Vegetable / Animal Oils & Fats
– Process Water, Miscellaneous

What happens when you need that one railcar or tank to carry multiple cargos back-to-back, at different temperatures, or withstand higher temperature cleaning requirements between services?

Trevor Newell
Seal for Life Industries


Seal For Life Industries Group – A company with a deep history of innovation in the market leading technologies that we represent. With more than 60 years of experience Seal For Life Industries offers the most diversified coating solutions in the market for superior infrastructure protection. Lining Systems for Dynamic Cargos with Trevor Newell

Overview of NSF/ANSI/CAN 600 and updated health effects criteria

We are going to talk about overview and a little bit of NSF / ANSI / CAN 600
  • Summary of pass / fail criteria (what it’s all about)
  • What does this all mean? (Moving Forward, Manufacturers, Applicators and End Users)
  • 100 SOLIDS Polyurethanes LifeLast – DuraShield
  • Case Histories
Does NSF/ANSI/CAN 600 Replace NSF/ANSI/CAN 60 and NSF/ANSI/CAN 61?
No, NSF/ANSI/CAN 600 is a companion standard to the flagship North American standards NSF/ANSI/Can 60 and NSF/ANSI/Can 61
All three of these go together. Until 2018, the content now comprises Standard 600 was located in Annexes A, C and D between NSF/ANSI/CAN Standards 60 and 61. Annex A in both standards contained the toxicological risk assessment (What’s in the product, will it harm people) procedures for establishing pass/fail criteria. On the other hand, Annex C (from NSF/ANSI/CAN 60) and Annex D (from NSF/ANSI/CAN 61) contained the pass/fail criteria. 
The joint committees that oversee NSF/ANSI/CAN 60 and NSF/ANSI/CAN 61 decided to separate these sections into their own standard that would serve as a reference standard for all drinking water standards.
This consolidation was intended to make the toxicology data more accessible, as well as to make easier to update and navigate the pass/fail criterial. This new reference standard was then designated NSF/ANSI/CAN 600.
In August, 2014, Health Canada published new MAC values for toluene, ethylbenzene and xylenes. NSF/ANSI/CAN 600 (formerly Annex A of NSF/ANSI/CAN 61) requires that a substance regulated by the U.S. EPA or Health Canada be evaluated according to those assessments, without additional toxicological evaluation. 
Consequently, the new MAC (maximum allowable concentration) values for these three solvents were published as updated criteria under NSF/ANSI/CAN 600. Corresponding SPAC (Single Product Allowable Concentration) values for each compound were set at levels 10-fold lower than the MAC values (Table 1)
Pass/Fail Criteria updated for Toluene, Ethylbenzene and Xylenes 
NSF set a five-year implementation  period for products to comply with the updated criteria for those solvents, with a compliance deadline of January 1, 2023. It is important to note that this compliance deadline applies to only the three solvents with reduced pass/fail criteria: toluene, ethylbenzene and xylenes. 
The reduction in pass/fail criteria for these three solvents constituted as substantial change from the previous criteria. These solvents are widely used in coating formulations, sometimes at quite high levels, so the dramatic change in the allowable leaching levels for these solvents has meant that manufacturers have had to consider reformulation or replacement of some solvent-based coating products that are currently certified under NSF/ANSI/CAN 61.
Identification of Compliant Products
After the January 1, 2023, implementation deadline, all products certified to NSF/ANSI/CAN 61 will be required to meet the new criteria in NSF/ANSI/CAN 600.
Including the most current health effects criteria for xylenes, toluene and ethylbenzene.
What does this all mean?
  • Most coatings will now be 100-solid formulations to meet the new testing criteria
  • Solvent based products with xylene, ethylbenzene and toluene will become obsolete for potable water.
  • It will be harder to coat small diameter pipe with 100 solids Epoxies and Urethanes
  • New application techniques and products will need to be considered.
Benefits of 100 Solid Polyurethanes
  • Better flexibility, impact and abrasion resistance than most epoxies.
  • Highly chemical resistant
  • Excellent water vapor permeability and absorption 
  • Can be used for ferrous, nonferrous, steel, wood, concrete and other substances (PVC)
  • Fast cure times-variable
  • USDA certified biobased product
  • Meets AWWA C222 and NSF/ANSI 61-600 for potable water applications
  • FDA approved for dry food storage
  • Excellent application characteristics – high build properties. NSF certification to 250 mils
Disadvantages of 100 Solid Polyurethanes
  • Not UV stable (Aromatic Polyurethane) does not chalk but will darken over time
  • 140°F (60°C) Max immersion temperatures
  • Not good for Hydrocarbons
  • Comes in 3 versions (110-61, 210-61, 310-61)
  • Available in Almond, Gray and Black for NSF applications
  • Variable cure speeds
  • 110-61 – 1 to 1 ratio
  • 210-61 – 2 to 1 ratio
  • 310-61 – 3 to 1 ratio 
DuraShield 110/210
  • Formulated specifically to provide outstanding long-term protection of steel pipe – both for interior lining and exterior coating
  • Fast cure/handling times with excellent adhesion (dry to touch in less than 1 minute, >3,000 PIS adhesion to steel)
  • Extremely fast cure speeds (1-10)
  • Excellent impact/abrasion resistance and flexibility – significantly reduces handling damage
  • NSF/ANSI/CAN 600 certified
DuraShield 110/210 – Typical Industrial Applications
  • Potable water
  • Hydroelectric penstocks
  • Reuse lines
  • Wastewater
  • Irrigation lines
  • Outfalls
  • HDD applications
  • Water transmission and storage
  • Pipes – Interior linings & exterior coatings
  • Tanks – Interior linings & exterior corrosion protection
DuraShield 310
  • Most tenured 100% solid polyurethane on the market – over 30 years
  • Designed to provide excellent blend of chemical/water resistance and flexility
  • Aggressive wastewater case histories since late 1980’s
  • Slower curing – field application
  • 72-hour re-coat window
  • Primarily used a hand spray and field joint coating/lining
  • NSF/ANSI/CAN 600 Certified
  • For use on concrete and steel
DuraShield 310 – Typical Industrial Applications
  • Steel pipe internal / external
  • Buried services – sheet pile, H beams, poles, wind towers, solar panels
  • Wet wells
  • Lift stations
  • Clarifiers
  • Digestors
  • Bio reactors
  • Sludge pits
  • Manholes
  • Demineralizers
  • Rake assemblies
  • Unox basins
  • Pulp chest, paper rolls
  • Fish raceways
  • Primary / secondary containment
  • FDA approval for dry bulk food storage
Application Methods
  • Spray application using a plural component pump (DS100 / 210 / 310)
  • Cartridge Application (DS110 / 210/ 310)
  • Hand Application (DS310/210 JARS Kits\)

To learn more about NSF/ANSI/CAN 600 and updated health effects criteris, contact a Unconventional Solutions sales representative today.

Dealership Floor Refurbishment and Logo Stenciling


Dealership Floor Refurbishment: A car dealership, needed to refurbish their showroom floor, which was showing signs of wear from years of use. Additionally, they wanted to stencil their new logo on the floor to create an aesthetically pleasing area for customers bringing vehicles to their dealership. The goal was to ensure the floor was durable, visually appealing, and slip-resistant.


Concrete: The existing floor was made of concrete, which required proper preparation for the new coatings and logo application.


Unconventional Solutions, Inc. (USI) provided a comprehensive dealership floor refurbishment and logo stenciling solution:

  1. Surface Preparation:
    • The USI crew began by grinding the floor surfaces to remove the existing logo and floor coating. This step was essential to create the proper anchor profile for the new coatings.
    • After thoroughly cleaning the floor, the surface was ready for the primer application.
  2. Primer Application:
  3. Epoxy Coating:
    • USI then applied one coat of USI High Build Epoxy in light grey. This high-build epoxy coating provided a durable and smooth base layer.
  4. Logo Stenciling:
    • Once the floor had cured enough, the area where the logo was to be laid was lightly abraded.
    • The new stencil for the client’s logo was laid out, and two coats of USI High Performance Urethane in blue were applied. This coating ensured the logo was vibrant and durable.
  5. Final Coating and Slip Resistance:
    • After the logo had cured, the entire floor, including the logo, was lightly sanded.
    • One coat of USI High Wear System was applied, and 46 grit Aluminum Oxide was broadcast throughout for slip resistance.
    • The floor was then back-rolled to ensure an even distribution of the aggregate and a smooth finish.

The Outcome The floor refurbishment project at the dealership was completed successfully, resulting in a durable, slip-resistant, and visually appealing floor. The new logo stenciled on the floor added a professional and customized touch to the dealership’s showroom. The client was extremely satisfied with the results, noting the significant improvement in both the aesthetics and functionality of the floor. The new flooring system will provide long-lasting performance and safety for customers and staff alike.


USI Flexible Broadcast Primer: For excellent adhesion to the concrete substrate.

USI High Build Epoxy: A durable, high-build coating providing a robust base layer.

USI High Performance Urethane: Used for the logo application, ensuring a vibrant and long-lasting finish.

USI High Wear System: A final coating providing wear resistance and enhanced durability.

46 grit Aluminum Oxide: Broadcast into the final coating for superior slip resistance.


For comprehensive floor refurbishment solutions that enhance both aesthetics and functionality, trust Unconventional Solutions. Our expertise in high-performance coatings and customized applications ensures your facility looks great and performs even better. Contact us today for your floor refurbishment and coating needs.