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Description for 3M EZ250120 Scotch-Weld Polyurethane Reactive (PUR) Easy 250 Adhesive
One component, Medium setting, low viscosity ideal for bonding wood and producing thin glue lines.Application Type Bond 1 Part or 2 Part 1-Part Material Form Liquid Substrate select plastics, Wood, maple Manufacturer 3M Chemistry Urethane Cure Method Moisture Application Temperature (°F) 250 Viscosity (cPs) low, 3,000 Color Off-White, White Density (g/cm³) 8.9 (Lbs/Gallon) -
Technical Data for 3M EZ250120 Scotch-Weld Polyurethane Reactive (PUR) Easy 250 Adhesive
Overview
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Application Type
- Adhesive - Bond
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1 Part or 2 Part
- 1-Part
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Material Form
- Liquid
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Industry
- Industrial
- Furniture / Wood-Working - wood based surfaces
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Chemistry
- Polyurethane - Urethane
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Application Method
- Dispenser - 3M™ Scotch-Weld™ Polyurethane Reactive Adhesive Applicator, 3M™ Scotch-Weld™ Polyurethane Reactive (PUR) Easy 250 Adhesive Applicator
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Cure Method
- Moisture / Condensation Cure - Moisture
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Color
- Off-White
- White
Specifications
Cure Specs
Application Temperature (°F) 250 Viscosity (cPs) low, 3,000 Test Method Set Time (min) medium, 2.00 Test Method Work / Pot Time (min) 4.00 Test Method Bond Strength
General Bond Strength (psi) Rapid, 1,105, 1,805, 1,915, 1,975, 1,950 Test Method Shear Strength (psi) 1,950, 620 Test Method Tensile Strength (psi) 4,000 Test Method Hardness
Shore D Hardness 60 Test Method Elongation (%) 625 Test Method Other Properties
% Solids (%) 100 Density (g/cm³) 8.9 (Lbs/Gallon) Business Information
Shelf Life Details Storage: For maximum shelf life, store product at 60°F (16°C) to 80°F (27°C), indoors and protected from exposure to moisture., Products in 10 fluid ounce cartridges have 12 months while all others have a 6 month shelf life in unopened containers. Shelf Life Temperature (°F) 60 to 80, 60 to 80 Shelf Life (mon) 12, 6 Not Good For
Don't Use With metal, glass, substrates that exceed 275°F (135°C) -
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Best Practices for 3M EZ250120 Scotch-Weld Polyurethane Reactive (PUR) Easy 250 Adhesive
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Surface Preparation
Apply to clean, dry surfaces. Remove oil, grease and other contaminants by wiping with isopropyl alcohol. For fiber reinforced plastics and other materials that are often contaminated with mold release agents, it is recommended that the surface be solvent wiped, abraded and solvent wiped. For additional information, see section on surface preparation. After heating to recommended application temperature, apply adequate amount of 3M™ Scotch-Weld™ Polyurethane Reactive (PUR) Easy 250 Plastic Adhesive to one of the substrates to be bonded. Join the substrates within the adhesives specified open time and hold/fixture the bonded part until the adhesive has adequately set. Do not use to bond metal or glass to itself or each other or cure will not occur due to low moisture vapor transmission of the substrate.
Note: When using solvents, extinguish all ignition sources, including pilot lights, and follow the manufacturer’s precautions and directions for use.
All wood should be dry and free of contaminants such as sawdust, dirt or other substances that may interfere with the adhesive bonding process. If the surface to be bonded contains a coating or finish, bonds should be made and evaluated to ensure proper adhesion. It may be necessary to evaluate other 3M™ Scotch-Weld™ Polyurethane Reactive (PUR) Easy 250 Plastic Adhesive products that are better suited to bond plastic surfaces.
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Application
After heating to recommended application temperature, apply adequate amount of 3M™ Scotch-Weld™ Polyurethane Reactive (PUR) Easy 250 Plastic Adhesive to one of the substrates to be bonded. Join the substrates within the adhesives specified open time and hold/fixture the bonded part until the adhesive has adequately set.
Do not use to bond metal or glass to itself or each other or cure will not occur due to low moisture vapor transmission of the substrate.
(Important: Adhesive heated at application temperature for more than 16 hours should be discarded.)
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Curing
The cure rate will vary depending on air temperature, relative humidity, substrate type and bond line thickness. Cure rate is more rapid on wood (moisture rich substrate) than on plastic.
With the exception of rate of strength build-up, all bonds, unless otherwise noted, were cured for a minimum period of 7 days at 77°F (25°C)/50% RH before testing or subjecting to further conditioning or environmental aging. Bonds were prepared using the suggested procedure for the particular substrate tested
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Clean-Up
Allow products to solidify. Remove uncured waxy material (usually within the first 20 minutes after application) by scraping with a putty knife or similar tool. For cured material, remove by cutting or sanding. Do not use heat or flame to remove adhesive.
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Testing
With the exception of rate of strength build-up, all bonds, unless otherwise noted, were cured for a minimum period of 7 days at 77°F (25°C)/50% RH before testing or subjecting to further conditioning or environmental aging. Bonds were prepared using the suggested procedure for the particular substrate tested.
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Set Time Test Methods
Set Time | Test Method |
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medium | |
2.00 min | The minimum amount of time required between when the bond is made and when it will support a 5 psi tensile load |
Viscosity Test Methods
Viscosity | Test Method | Temperature |
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low | ||
3,000 cPs | Measured on Brookfield viscometer with Thermosel using spindle #27. | 121°C |
Work / Pot Time Test Methods
Work / Pot Time | Test Method |
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4.00 min | The bonding range of a 1/8" bead of molten adhesive on a non-metallic substrate |
General Bond Strength Test Methods
General Bond Strength | Cure Time | Cure Temperature | Cure Humidity | Substrate | Test Time | Test Temperature | Test Method |
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Rapid | |||||||
1,105 psi | 10,080 min | 25°C | 50 % | Maple | 10 min | 23°C | Maple Overlap Shear Strength (psi) tested @ 73°F (23°C) at various times after bonding. The Maple was conditioned for 7 days at 77°F (25°C)/50% RH prior to bonding |
1,805 psi | 10,080 min | 25°C | 50 % | Maple | 60 min | 23°C | Maple Overlap Shear Strength (psi) tested @ 73°F (23°C) at various times after bonding. The Maple was conditioned for 7 days at 77°F (25°C)/50% RH prior to bonding |
1,915 psi | 10,080 min | 25°C | 50 % | Maple | 1,440 min | 23°C | Maple Overlap Shear Strength (psi) tested @ 73°F (23°C) at various times after bonding. The Maple was conditioned for 7 days at 77°F (25°C)/50% RH prior to bonding |
1,975 psi | 10,080 min | 25°C | 50 % | Maple | 4,320 min | 23°C | Maple Overlap Shear Strength (psi) tested @ 73°F (23°C) at various times after bonding. The Maple was conditioned for 7 days at 77°F (25°C)/50% RH prior to bonding |
1,950 psi | 10,080 min | 25°C | 50 % | Maple | 10,080 min | 23°C | Maple Overlap Shear Strength (psi) tested @ 73°F (23°C) at various times after bonding. The Maple was conditioned for 7 days at 77°F (25°C)/50% RH prior to bonding |
Tensile Strength Test Methods
Tensile Strength | Cure Time | Cure Temperature | Cure Humidity | Test Method |
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4,000 psi | 10,080 min | 25°C | 1 % | ASTM D638, Die C, measured on .011" - .012" thick films cured for a minmum of 7 days at 77°F (25°C)/50% relative humidity (RH), @ Break(2). |
Shear Strength Test Methods
Shear Strength | Type | Substrate | Test Temperature | Test Method |
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1,950 psi | Overlap Shear Strength | Maple | 23°C | Overlap shear (OLS) strengths were measured on 1" wide 1/2" overlap specimens. These bonds were made individually using 1" x 4" sample coupons. The thickness of the bond line was .003-.006". The thickness of the Maple, .375". The separation rate of the testing jaws was 2" per minute |
620 psi | Overlap Shear Strength | Maple | 82°C | Overlap shear (OLS) strengths were measured on 1" wide 1/2" overlap specimens. These bonds were made individually using 1" x 4" sample coupons. The thickness of the bond line was .003-.006". The thickness of the Maple, .375". The separation rate of the testing jaws was 2" per minute |
Elongation Test Methods
Elongation | Test Method |
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625 % | ASTM D638, Die C, measured on .011" - .012" thick films cured for a minmum of 7 days at 77°F (25°C)/50% relative humidity (RH)., at Break |
Shore D Hardness Test Methods
Shore D Hardness | Shore Hardness Test Method |
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60 | Measured on .090" - .110" thick bars |

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