Phenolic Labels

Phenolic labels and tags have long been used in industrial settings for their durability and resistance to extreme conditions. Today, modern acrylic-based engraving stock has largely taken over that market, being use in everything from warehouse signage to OEM equipment tags.

In this guide, we’ll break down the differences, explore their applications, and help you decide which material suits your needs best.

Fact is, the vast majority of "Phenolic Labels" in the field are actually made from an Acrylic Based Plastic Engraving Stock.

Advantages of Acrylic Engraving Stock

Typically 1/16" thick
Front engraved with Your Text
3M Peel and Stick Adhesive Applied

Fast lead time, great price
Use Indoors or Outdoors
Stock availability
Allows detailed engraving for logos and diagrams

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See our Material Specs

The term Phenolic is often used to refer to any layered plastic. Actually, phenolic is a very specific, resin-based material. It is no longer widely used for signage in General Manufacturing. Modern acrylic based plastics have taken over that market. Almost always, if a specification calls out Phenolic they are really needing Plastic. Consult your Engineer or contact us if you are not sure.

True Phenolic is still used in some very specific applications. See our chart below.

See Acrylic Plastic Specifications

Phenolic labels in High-Voltage Applications

While acrylic-based engraving stock dominates most modern labeling needs, phenolic labels remain a go-to choice in specialized markets, particularly where very high voltages are involved. Phenolic’s resin-based composition offers exceptional electrical insulation, making it ideal for environments like electrical substations, power plants, or industrial equipment operating at thousands of volts. Unlike acrylic, which conducts electricity to a slight degree, phenolic’s near-zero conductivity ensures safety and compliance in these critical settings.

For example, phenolic nameplates are often specified in military or aerospace applications under MIL-SPEC standards, where equipment must withstand extreme electrical stress without compromising performance. However, this comes at a cost: phenolic’s higher price, longer lead times (often 2-4 weeks), and lack of UV stability limit its use to indoor, high-stakes scenarios. If your project involves high-voltage systems, consult your engineer to confirm phenolic’s necessity—otherwise, acrylic’s versatility might still win out.

Comparison of Acrylic and Phenolic Labels

	Standard Plastic	Textured Plastic	Phenolic
Price
UV stable for Outdoor Use
Online Ordering
Detailed Engraving
Stock Colors	13	6	4
Temperature range	Good	Better	Best
Near Zero Electrical Conductivity
Chemical Resistance
Wear Resistance	Good	Best	Good
Flexibility	Flexible	Somewhat Flexible	Very Rigid
Edges	Square	Square	Beveled
Engraving Method	Laser	Laser	Rotary Tool
Mounting Method	Peel and Stick or Fasteners	Peel and Stick or Fasteners	Fasteners
Lead Time	Usually 1-2 days	Usually 1-2 days	2-4 weeks minimum