ONYX
Fast, precise flow for technicians who want premium concealment in tight and intricate damage.
- Thinner, highly workable viscosity
- Excels in star breaks and long legs
- Ideal for tight breaks and short cracks
- Advanced polarized cloaking technology
Black Label
Worldwide patent pending
The Final Result Matters
Make any repair virtually disappear. Two premium formulas. One advanced cloaking technology. Stock up on both so you're ready to tackle any repair that comes your way with Black Label coverage.
Black Label Resins are part of the GlasWeld family of brands, now available through Glass Mechanix.
Selected formula
THE PAIR
Two premium formulas powered by advanced polarized cloaking technology. Complete Black Label coverage for virtually every repair.
$85.90 USD
In stock
True all-weatherReliable performance all 12 months.
All automotive glassDesigned to disguise the finished repair.
Worldwide patent pendingAdvanced polarized cloaking technology.
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True all-weather performance
Twelve months. Every shade of glass.
EMERALD is not a warm-weather resin. It is a true all-weather formula designed to perform all 12 months of the year—including the hottest summer days.
Its subtle green character is inspired by automotive glass, with the goal to hide the finished repair.
Choose your control
Different specialties. The same premium standard.
Either formula can handle virtually any repair, so you can't go wrong. Based on the repair in front of you, you decide which to choose.
EMERALD
A true all-season formula with slightly more controlled flow—spectacular in the summer, dependable all year.
- Use it all 12 months of the year
- Excels in bullseyes and combination breaks
- Strong control in drilled and larger open repairs
- Great on every shade of automotive glass
At-a-glance guide
Which bottle should you reach for?
Use this as a practical starting point, not a rigid rule. Technique, temperature, and the damage itself still shape every repair.
Star breaks
Its thinner flow reaches intricate legs quickly and cleanly.
Tight damage
A natural fit when penetration and high reflectivity matter most.
Bullseyes
Controlled flow for the larger, open area of the repair.
Combination breaks
Balanced control for complex repairs with more open volume.
Hot windshields
Excellent heat performance without limiting it to a single season.
Complete coverage
Both formulas are versatile. Together, they cover virtually every repair.
My experience with ONYX Resin exceeded my expectations. The repair was nearly invisible. Alfredo Calva · Alfredo’s Auto Glass
Straight answers
Black Label, clarified.
Is EMERALD only for warm weather?
No. EMERALD is a true all-weather resin for all 12 months of the year. Its controlled flow simply gives it an extra advantage when the glass is hot.
Can EMERALD be used on clear glass?
Yes. Use it on all automotive glass. The subtle green character is inspired by the natural cast of automotive glass; it is not limited to tinted glass.
Which formula should I choose?
Both are highly versatile. ONYX is the natural choice for tight, intricate and highly reflective damage. EMERALD adds slightly more flow control for bullseyes, combination breaks, drilled repairs and larger open voids.
Why carry both?
The pair gives your shop a complete Black Label toolkit. You can choose the feel that best suits the repair, the glass and your technique without compromising concealment.