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LORD Corporation

With more than 3,100 employees in 26 countries, 19 manufacturing facilities and 10 R&D centers worldwide, we're there for our customers.

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Sign Adhesives

Our sign adhesives offer you versatile, convenient and durable solutions for your sign assembly needs. Build signs using structural adhesives and eliminate welding, riveting and mechanical fasteners. We have a wide range of sign adhesives to select from and even some UL approved adhesives.

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Sign Bonding Adhesives

LORD Structural Adhesives are full performance sign adhesives that offer advantages over welding and mechanical fastening. Our sign adhesives bond dissimilar materials, provide improved appearance, insulate against galvanic corrosion and offer excellent environmental resistance. Adhesive bonding provides cost savings due to reduced labor costs and sign assembly time.

Signlok sign adhesives provide right-sized packaging to fit most jobs and eliminate waste, are UL approved, and have long shelf life options that reduces costs. 

Structural Adhesives for Sign Builders

  • Replace welding, riveting and other mechanical fasteners
  • Get right-sized packaging for the job 
  • Excellent chemical and environmental resistance 
  • Address a wide variety of application needs 

 

UL Approved Adhesives

With more than 30 years of sign application experience, we have developed an extensive line of UL approved adhesive solutions that can bond multiple substrates. See our full list of UL approved adhesives and corresponding substrates. 

 

View UL Approved Adhesives

5 Reasons to Use Sign Adhesives vs. Welding/Fasteners

  • Lower costs and assembly time 
  • Reduce waste with more accurate job estimates
  • Eliminate read-through 
  • Address a broad range of client requirements or special sign projects, by bonding to nearly all substrates 
  • Longevity and customer satisfaction with an aesthetically pleasing sign 

Testimonials

Thousands of signs have been built using our LORD and Signlok sign adhesives. Here are just a few sign shops that have used our adhesives. 

lunsford sign works sign
"We do extensive real-world testing before we can trust an adhesive to perform up to our expectations and standards in our sign fabrication applications. Your products work!" Lunsford Sign Works

"We do extensive real-world testing before we can trust an adhesive to perform up to our expectations and standards in our sign fabrication applications. Your products work!"

yellow natures oasis sign
"Precise control of the mixing and placement of the adhesive. Its dry times are accurate and bonding various mixed media is something we depend on. Always secure and effective." Mountain Graphics Sign

"Precise control of the mixing and placement of the adhesive. Its dry times are accurate and bonding various mixed media is something we depend on. Always secure and effective."

LED backlit sign
"Best adhesive ever. Use it all day, everyday." Sign Builders

"Best adhesive ever. Use it all day, everyday.

city background full of signs
On Demand Sign Webinar Series

Watch our educational sign webinar series, covering everything from how to get started using sign adhesives to channel letter assembly to a Q&A with our sign experts. 

Explore Sign Webinars

Metal Bonding Adhesives
Product Features Applications Technical Data Accessories
Work Time Handling Time Full Cure Mix Ratio Color Size Part # Dispensing Gun Mixing Tip Plunger
LORD Signlok 403 Fast
UL 746C Certified Adhesive		 Right-Sized Packaging
Powder Coating*
Extended Shelf Life
Glass Beads for Precision Bondline
UV & Corrosion Resistance
for Outdoor Assemblies
Minimal Surface Preparation		 Replace Welding and Mechanical Fastening
Channel Letter Assembly
Metal Box Frame Assembly
Corner Key Installation
Bond and Seal in One Step
Seal for Light Leaks		 2-4 min 4-6 min 24 hr 2:1 Tan 225 mL 3024187 3029124
3001129		 3001173
LORD Signlok 406 Medium
UL 746C Certified Adhesive		 6-10 min 12-17 min 24 hr 2:1 Tan 225 mL 3024186 3029124
3001129		 3001173
LORD Signlok 810 Medium
UL 746C Certified Adhesive		 Low Read-Through
Powder Coating*
Right-Sized Packaging
Extended Shelf Life
Glass Beads for
Precision Bondline
UV Resistant		 ACM Panel Bonding Thin Gauge Material Bonding Glossy Material Bonding Flexible Material Bonding 8-12 min 20-25 min 24 hr 2:1 Grey 225 mL 3024307 3029124
3001129		 3001173
LORD Signlok 204 Fast
UL 746C Certified Adhesive		 Right-Sized Packaging
Limited Cold Impact Resistance
Limited High Impact Resistance		 Replace Welding and
Mechanical Fastening		 4-6 min 22-26 min 24 hr 2:1 Tan 225 mL 3028420 3029124
3001129		 3001173
LORD 403/19
Fast
UL 746C Certified Adhesive		 Powder Coating*
UV & Corrosion Resistance
for Outdoor Assemblies
Minimal Surface Preparation		 Replace Welding and
Mechanical Fastening
Channel Letter Assembly
Metal Box Frame Assembly
Corner Key Installation
Bond and Seal in One Step
Seal for Light Leaks		 2-4 min 4-6 min 24 hr 4:1 Tan 50 mL
CX(404 mL)		 3021003
3021004		 3001112
3004487		 3004476
3001179		 3004479
N/A (4:1)
LORD 406/19
Medium
UL 746C Certified Adhesive		 6-10 min 12-17 min 24 hr 4:1 Tan 50 mL
375 mL
CX (404 mL)		 3021024
3020514
3021011		 3001112
3004857
3004487		 3004476
3004657
3001179		 3004479
N/A (4:1)
N/A (4:1)
LORD 410/19
Slow
UL 746C Certified Adhesive		 20‑30 min 1-2 hr 24 hr 4:1 Tan CX (404 mL) 3021027 3004487 3001179
LORD 201 Indefinite
Open Time,
Fast Cure		 No-Mix
Brush on Lower Viscosity
Flowable		 Laminating
(Full Surface Coverage)
Assembly of Large Surfaces & Surfaces with Tight Tolerances		 12-16 min 24 hr Per Application Off-white 1/10 gal/cart
Pail		 3003489

3003492
LORD 204 Indefinite
Open Time,
Fast Cure		 No-Mix
Trowel on High Viscosity
Non-sag		 Laminating
(Full Surface Coverage)
Metal Fabrication
Assembly of Large Surfaces & Surfaces with Tight Tolerances		 20-30 min 24 hr Per Application Off-white 1/10 gal/cart 3003505
LORD
Accelerator 4		 No-Mix Catalyst for
LORD 201 & 204		 Laminating with
LORD 201 & 204		 Per Application Clear (Dries Crystalline) 1 oz
1 qt
1 gal		 3004031
3004033
3004032
LORD
7610DTM
Slow		 Single-Component
Easy to Use
Bonds to Wide Variety
of Materials
UV Resistant		 General Purpose
Adhesive & Seam Sealer
Seals Light Leaks
Sealer for Channel Letter Cans
Water Intrusion Barrier or Sealant		 25-35 min 6-12 hr 1-5 days 1 Part Bright White 1/10 gal/cart 3029094 3023577

Technical Data reported at 70-77°F (21-25°C).
*Refer to complete instructions for Powder Coating after Bonding with LORD Acrylic Adhesives (TT3068).

Plastic Bonding Adhesives
Product Features Applications Technical Data Accessories
Work Time Handling Time Full Cure Mix Ratio Color Size Part # Dispensing Gun Mixing Tip Plunger
LORD 7550 A/C
Fast		 Optically Clear Adhesive for
Non-Structural Assemblies
UV Resistant
Self-leveling		 Trimcap
Letter Track
Aesthetic Assemblies
Potting, Encapsulation		 3-5 min 1 hr 72 hr 1:1 Optically Clear 50 mL 3003953 3001112 3004476 3009588
LORD 7542
A/B
Medium
UL 746C Certified Adhesive		 Bonds plastics, FRP & SMC with
Minimal Surface Prep
Odorless
Non-flammable		 Bonding Plastics
Bonding Foam, Foam Board,
Natural Materials
Cross Bonding** Metal to
Engineered Plastics for Larger, Outdoor Assemblies subject to Thermal Expansion		 4-7 min 1-2 hr 24 hr 1:1 Brown 50 mL 3003884 3001112 3004476 3009588
LORD 7556
A/B
Fast		 Translucent Adhesive for Wide
Range of Plastics, Polycarbonate
and Prefinished Metals
Non-sag
Fast Set
Non-yellowing		 Aesthetic Assemblies
Decorative Parts		 3-5 min 1 hr 24 hr 1:1 Translucent 50 mL 3003962 3001112 3004476 3009588

Technical Data reported at 70-77°F (21-25°C).
**Refer to cross bonding chart for specific materials.

Cross Bonding Adhesives
Product Features Applications Technical Data Accessories
Work Time Handling Time Full Cure Mix Ratio Color Size Part # Dispensing Gun Mixing Tip Plunger
LORD Signlok 810
Medium
UL 746C Certified Adhesive		 Flexible
UV Resistant
Bonds to Bare Metal		 Cross Bonding** Metal to
Engineered Plastics for Larger, Outdoor Assemblies subject to Thermal Expansion		 8-12 min 20-25 min 24 hr 2:1 Grey 225 mL 3024307 3029121
3001129		 3001173
LORD 7542
A/B
Medium
UL 746C Certified Adhesive		 Bonds plastics, FRP & SMC with Minimal Surface Prep
Odorless
Non-flammable		 Cross Bonding** Prefinished Metals to Engineered Plastics for Larger, Outdoor Assemblies 4-7 min 1-2 hr 24 hr 1:1 Brown 50 mL 3003884 3001112 3004476 3009588
LORD
7610DTM
Slow		 Single-Component
Easy to Use
Bonds to Wide Variety of Materials
UV Resistant		 General Purpose Adhesive &
Seam Sealer
Seals Light Leaks
Sealer for Channel Letter Cans
Water Intrusion Barrier or Sealant		 25-35 min 6-12 hr 1-5 days 1 Part Bright White 1/10 gal/cart 3029094 3023577 3015312

Technical Data reported at 70-77°F (21-25°C).
**Refer to cross bonding chart for specific materials.

Specialty Adhesives
Product Features Applications Technical Data Accessories
Work Time Handling Time Full Cure Mix Ratio Color Size Part # Dispensing Gun Mixing Tip Plunger
LORD
7610DTM
Slow		 Single-Component
Paintable
Easy to Use
Bonds to Wide Variety of Materials
UV Resistant		 General Purpose Adhesive & Seam Sealer
Seals Light Leaks
Sealer for Channel Letter Cans
Water Intrusion Barrier or Sealant		 25-35 min 6-12 hr 1-5 days 1 Part Bright White 1/10 gal/cart 3029094 3023577 3015312
LORD 7650
Slow		 Single-Component
High Tack
Low Viscosity		 Laminating Foam &
Paper Board		 15-30 min 24 hr 1-5 days 1 Part Honey 1/2 pt
1 gal		 3003977
3003978
LORD 320/322
Slow		 Rubber Toughened
Heat Resistant
High Strength		 Studs
Bolting
Concrete Potting
Gap Filling		 20-40 min 2-4 hr 24 hr 1:1 Grey 50 mL 3003632 3001112 3004476 3009588
LORD 360
Fast		 Fast Cure at Room Temperature
Non-Sag on Vertical Surfaces		 Studs
Bolting to Concrete & Foam		 2-4 min 5-10 min 24 hr 1:1 Tan 50 mL 3003643 3001112 3004476 3009588

Technical Data reported at 70-77°F (21-25°C).
Application Tips for Sign Adhesives Part 3: Using the Right Amount of Adhesive
Complete adhesive coverage in a bonding area is important, but how much is too much? With adhesives, more is not necessarily better. We'll walk you through how to apply a sign adhesive to get the best result.
Read post
Selecting the Right Sign Adhesive for the Job
Signs are not only important for wayfinding but are a critical part of any business’s branding message. As such, signs must be creatively designed and reliably constructed. Structural adhesives can replace welding, riveting and other mechanical fasteners. They offer improved appearance, lower costs and shorter assembly time.
Read post

Resources

How-to Sign Videos
Watch our series of sign videos to see how to use adhesives for sign building.
Sign Adhesive FAQs
Read from more than 30 different topics on sign frequently asked questions that our support teams typically receive.
Additional Sign Resources
From videos to literature, see all of our sign resources in one location.
Compare Sign Adhesives
View all our sign adhesives and technical specifications.
Brochure: Sign Selector Guide
See our full line of adhesives for sign assembly.
Sign Builder Illustrated Article: Structural Adhesives Solve Read-Through Issues
The signage industry is all about image, and to be consistently successful in the business, the image must be perfect ... continue reading
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