Henkel Lite-Lok 490

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Description for Henkel Lite-Lok 490

A UV light curable sealer designed primarily to bond and seal metal components. The cured product has good impact resistance, good depth of cure, and good humidity resistance. Good thermal cycling resistance, hard, tack free cured surface.

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Brand	Bondmaster
Application Type	Seal
1 Part or 2 Part	1 Part
Material Form	Liquid
Substrate	Metal, Polyolefins
Industry	Motor
Manufacturer	Henkel
Chemistry	Acrylate mixture
Cure Method	UV
Cure Time (min)	Fast, 0.02 to 0.05
Viscosity (cPs)	20,000
Color	Clear
Other Resistance	Good thermal cycling resistance

Best Practices for Henkel Lite-Lok 490

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Technical Data for Henkel Lite-Lok 490

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Overview

Application Type
- Sealant - Seal
1 Part or 2 Part
- 1 Part or 2 Part - 1 Part
Material Form
- Liquid
Substrate
- Polyolefin - Polyolefins
- Metal
Industry
- Motors - Motor
Chemistry
- Acrylic - Acrylate mixture
Application Method
- Dispenser - Piston pump dispensing system, Pressure pot
Cure Method
- UV / Visible Light - UV
Color
- Clear / Transparent - Clear
Brand
- Bondmaster

Specifications

Cure Specs

Cure Time (min)	Fast, 0.02 to 0.05
Viscosity (cPs)	20,000	Test Method

Bond Strength

Impact Strength (psi)	Impact strength

Material Resistance

Impact Resistance	Good impact resistance
Moisture/Humidity Resistance	Good
Other Resistance	Good thermal cycling resistance

Other Properties

Specific Gravity	1.070
Flash Point (°F)	>212.0
% Solids (%)	100

Business Information

Shelf Life Details	LITE LOK 490 has a shelf life of six months when stored at 2°C-27°C (35°F-80°F).;Store below 27°C (80°F), do not freeze., LITE LOK 490 has a shelf life of six months when stored at 2°C-27°C (35°F-80°F).;Store below 27°C (80°F), do not freeze.
Shelf Life (mon)	6, 6

Best Practices for Henkel Lite-Lok 490

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1. Surface Preparation
  
  LITE-LOK 490 bonds well to many untreated surfaces. However, adhesion is often improved by surface preparation before bonding. The surface should be free of contamination such as dirt, dust, grease or oil. An alcohol wipe is suitable for cleaning most surfaces. Optimum strength is obtained by abrading the surface followed by a solvent wipe to remove any loose particles. Polyolefins must be corona treated, or flame treated before bonding.
2. Application
  
  LITE-LOK 490 is best applied by extruding the product onto the substrate to be sealed or bonded using a 14-16 gauge dispensing tip. Sufficient product must be applied to seal all gaps, and completely coat the part to be bonded or sealed. After dispensing onto the part, the product should be cured as soon as possible to prevent any pre-reaction with ambient light.
  
  LITE-LOK 490 may be applied via a pressure pot, or piston pump dispensing system. All fittings and tubing used in the dispensing system must be opaque to light.
3. Curing
  
  Optimum cure is obtained when LITE-LOK 490 is exposed to UV light. The peak reactivity of the product is from exposure to light from 325 nm through 365 nm. The time needed for curing is a combination of many factors. Some of these are: The thicker the substrate, the longer the exposure time needed for curing. The more UV light absorbing that the substrate is, the longer the exposure time needed for curing. The lower that the intensity of the UV light source is, the longer the exposure time needed for curing. The farther the distance of the product from the UV light source, the longer the exposure time needed for curing.
  
  Typically, LITE-LOK 490 will cure after a UV light exposure from one to three seconds, when cured at or near the focal point of a high intensity UV light source. To achieve complete cure, all of the product must be exposed to the UV light source.
Comparable Materials for Henkel Lite-Lok 490

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Spec Engine^® Results
- Loctite AA 349(Henkel)
  The electrical properties of this product also make it suitable for potting and tacking applications.
- Lite-Lok 495(Henkel)
  • Light Curable Adhesive • Structural Bonding of Plastics • Sealing of Plastic Assemblies • Fast cure under UV-A light • 100 % solids, no solvents or by-products upon curing • Good thermal cycling resistance • Hard, tack free cured surface • Versatile adhesion • High strength and durable • Excellent water and detergent resistance •
- Lite-Lok 491(Henkel)
  • Light Curable Adhesive • Bonding fiberglass laminations • Bonding plastic assemblies • Fast cure under low energy visible light • Cures through UV absorbing surfaces • 100 % solids, no solvents or by-products • Good thermal cycling resistance • Versatile adhesion •
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