Pressurized Radiator Warning Sticker – Hot Coolant

WRN-009

This pressurized radiator warning sticker identifies the hot-coolant burn hazard at a cooling-system access point. It combines an orange WARNING header, full printed cap-opening instructions and a yellow triangular radiator pictogram.

Printed wording

WARNING
PRESSURIZED
SYSTEM.

Hot Coolant Can Cause
Serious Burn. To Open Cap,
Stop Engine Wait Until
Radiator Is Cool, Then Loosen
Cap Slowly To Relieve Pressure.

Product details

  • Listed size: 4 inches wide × 2 inches tall.
  • Product code: WRN-009.
  • Horizontal text-and-pictogram layout.
  • Radiator releasing steam pictured inside a yellow warning triangle.

Recommended placement

As a general recommendation, use a visible fixed panel, cooling-system shroud or service-access panel beside the radiator-cap access point, where a person can read the warning before reaching for the cap. Consider the normal maintenance approach rather than a location visible only from the operator's seat.

This is general guidance, not a verified factory location. Follow the equipment manufacturer's required label and location. Keep ventilation openings, inspection points and existing warnings clear. Check the mounting surface and temperature requirements; do not assume the adhesive is suitable for direct application to the radiator, cap or another heated component.

Check before ordering

Compare the wording, dimensions and pictogram with the warning required for your cooling system. This product is a warning label, not a radiator cap, pressure-relief device, temperature indicator or coolant product. It does not establish a safe waiting time or replace the manufacturer's cooling-system service procedure.

This radiator warning is distinct from our hydraulic tank pressure warning sticker. You can also browse our machinery safety signs and decals.

For help matching an existing warning, contact us with a clear photo, label dimensions and equipment details.

Technical & Safety Data

Product Composition & Identification

Film Construction: 2.75 mil Polymeric Calendered Vinyl base paired with a 2.75 mil flexible clear Polymeric Calendered Vinyl overlaminate.

Adhesive System: Clear Solvent-Based Permanent Pressure Sensitive Acrylic.

Total Adhesive Thickness: 2.3 mil combined (1.2 mil base and 1.1 mil laminate).

Health, Safety & Regulatory Compliance

Fire Rating: Class A fire rating under ASTM E84-17 testing.

Commercial Safety: Meets the highest life safety requirements for indoor and outdoor commercial graphics.

Toxicity & Structure: Phthalate-Free Film Structure.

Regulatory Standards: Meets the health and safety requirements set forth by CPSIA, REACH, RoHS, and California Proposition 65.

Physical & Chemical Properties

Chemical Resistance: Resists mild acids, mild alkalis, solvents, and salts.

Moisture Resistance: Excellent resistance to water, including full immersion.

Tensile Strength: 12.5 Pounds/Inch.

Dimensional Stability: 0.020 Inch (Machine Direction).

Peel Adhesion: 4.5 Pounds/Inch from Stainless Steel.

Environmental & Temperature Tolerances

Operating Temperature Range: -40°F to 190°F.

Application Temperature: 50°F to 80°F recommended.

Installation Surface: Clean, dry, and free of dust, dirt, debris, or grease.

Outdoor Lifespan: Up to 5 years permanent durability.

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