Loctite® Ultraviolet Curing Adhesives

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27 Products

About Structural Adhesives

About Paint and Protective Coatings

These adhesives stay pliable for flexible bonds that resist cracking. For easy positioning, they begin to harden only when exposed to light.

1700A257 and 2454N1 fluoresce under UV light for easy inspection.

Use adhesives in syringes with a dispensing gun with plunger (sold separately).

	Container
Mfr. Model No.	Size, fl. oz.	Type	Max. Gap Size Filled	Begins to Harden	Reaches Full Strength	Light Intensity Requirements to Reach Full Strength	Cure Type	Consistency (Viscosity)	Elongation	Temp. Range, °F	Color	For Joining		Each
Loctite® Adhesives
3103	0.84	Syringe	0.02"	5 sec.	90 sec.	18 sec. @ 6 mW/cm²	UV Light, Visible Light	Thick Liquid (11,250 cP)	260%	-65° to 300°	Light Yellow	Glass, Metal, Plastic	00000000	000000
3106	0.84	Syringe	0.02"	5 sec.	90 sec.	15 sec. @ 6 mW/cm²	UV Light, Visible Light	Thick Liquid (5,500 cP)	250%	-65° to 300°	Light Yellow	Glass, Metal, Plastic, Rubber	00000000	00000
3106	33.8	Bottle	0.02"	5 sec.	90 sec.	15 sec. @ 6 mW/cm²	UV Light, Visible Light	Thick Liquid (5,500 cP)	250%	-65° to 300°	Light Yellow	Glass, Metal, Plastic, Rubber	00000000	000000
3201	0.84	Syringe	__	5 sec.	90 sec.	20 sec. @ 6 mW/cm²	UV Light, Visible Light	Thick Liquid (3,750 cP)	265%	-65° to 300°	Light Yellow	Metal, Plastic	0000000	00000
3211	0.84	Syringe	__	5 sec.	90 sec.	18 sec. @ 6 mW/cm²	UV Light, Visible Light	Thick Liquid (11,250 cP)	260%	-65° to 300°	Light Yellow	Glass, Metal, Plastic	0000000	00000
3321	0.84	Syringe	0.02"	5 sec.	90 sec.	15 sec. @ 6 mW/cm²	UV Light, Visible Light	Thick Liquid (5,500 cP)	250%	-65° to 300°	Light Yellow	Glass, Metal, Plastic, Rubber	00000000	00000
3526	0.84	Syringe	__	5 sec.	30 sec.	5 sec. @ 6 mW/cm²	UV Light, Visible Light	Thick Liquid (17,500 cP)	185%	-65° to 300°	Light Yellow	Metal	00000000	00000
3936	0.84	Syringe	__	5 sec.	30 sec.	15 sec. @ 6 mW/cm²	UV Light, Visible Light	Thick Liquid (11,000 cP)	300%	-65° to 300°	White	Metal	00000000	00000

Dispensing Gun with Plunger

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Each

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Light-Activated Instant-Bond Adhesives

For easy positioning, these adhesives begin to harden only when exposed to light.

Thick liquids fill large gaps and won't drip on vertical surfaces. Thin liquids flow to fill small gaps between close-fitting parts.

352 can also be cured with an activator (sold separately).

Use adhesives in syringes with a dispensing gun with plunger (sold separately).

	Container
Mfr. Model No.	Size, fl. oz.	Type	Max. Gap Size Filled	Begins to Harden	Reaches Full Strength	Light Intensity Requirements to Reach Full Strength	Cure Type	Consistency (Viscosity)	Temp. Range, °F	Color	For Joining		Each
Loctite® Adhesives
349	1.69	Bottle	__	5 sec.	30 sec.	8 sec. @ 10 mW/cm²	UV Light	Thick Liquid (9,750 cP)	-65° to 260°	Light Yellow	Glass, Metal	00000000	000000
352	1.69	Bottle	__	10 sec.	60 sec.	12 sec. @ 6 mW/cm²	Activator, UV Light	Thick Liquid (19,500 cP)	-65° to 270°	Amber	Glass, Metal, Plastic, Rubber	00000000	00000
3104	0.84	Syringe	__	5 sec.	90 sec.	15 sec. @ 6 mW/cm²	UV Light, Visible Light	Thin Liquid (150 cP)	-65° to 300°	Light Yellow	Glass, Metal, Plastic, Rubber	00000000	00000
3105	0.84	Syringe	__	5 sec.	90 sec.	15 sec. @ 6 mW/cm²	UV Light, Visible Light	Thin Liquid (300 cP)	-65° to 300°	Light Yellow	Glass, Metal, Plastic, Rubber	00000000	00000
3105	33.8	Bottle	__	5 sec.	90 sec.	15 sec. @ 6 mW/cm²	UV Light, Visible Light	Thin Liquid (300 cP)	-65° to 300°	Light Yellow	Glass, Metal, Plastic, Rubber	00000000	000000
3301	0.84	Syringe	__	5 sec.	90 sec.	15 sec. @ 6 mW/cm²	UV Light, Visible Light	Thin Liquid (150 cP)	-65° to 300°	Light Yellow	Glass, Metal, Plastic	00000000	00000
3311	0.84	Syringe	__	5 sec.	90 sec.	15 sec. @ 6 mW/cm²	UV Light, Visible Light	Thin Liquid (300 cP)	-65° to 300°	Light Yellow	Glass, Metal, Plastic	00000000	00000
3341	0.84	Syringe	__	5 sec.	30 sec.	10 sec. @ 6 mW/cm²	UV Light, Visible Light	Thin Liquid (530 cP)	-65° to 300°	Light Yellow	Metal, Plastic	00000000	00000
3922	0.84	Syringe	__	10 sec.	30 sec.	10 sec. @ 6 mW/cm²	UV Light, Visible Light	Thin Liquid (300 cP)	-65° to 300°	Light Yellow	Glass, Metal, Plastic, Rubber	00000000	00000
4311	1	Bottle	0.008"	5 sec.	24 hrs.	10 sec. @ 30 mW/cm²	UV Light, Visible Light	Thin Liquid (1,050 cP)	-65° to 200°	Green	Ceramic, Composites, Glass, Metal, Plastic, Rubber, Wood	000000	00000

Dispensing Gun with Plunger for Syringes	Each	000000
Activator for Loctite® 352 (1.8-oz. Bottle)	Each	00000
Activator for Loctite® 352 (4.5-oz. Aerosol Can)	Each	00000

Moisture-Resistant Light-Activated Instant-Bond Adhesives

Moisture, humidity, and immersion in water won't degrade the bond of these adhesives. For easy positioning, they begin to harden only when exposed to light. Use a dispensing gun with plunger (sold separately) to dispense adhesive.

	Container
Mfr. Model No.	Size, fl. oz.	Type	Begins to Harden	Reaches Full Strength	Light Intensity Requirements to Reach Full Strength	Cure Type	Consistency (Viscosity)	Temp. Range, °F	Color	For Joining		Each
Loctite® Adhesives
3494	0.84	Syringe	5 sec.	30 sec.	10 sec. @ 6 mW/cm²	UV Light, Visible Light	Thick Liquid (6,000 cP)	-65° to 300°	Clear	Glass, Metal	00000000	000000
3525	0.84	Syringe	5 sec.	30 sec.	5 sec. @ 6 mW/cm²	UV Light, Visible Light	Thick Liquid (15,250 cP)	-65° to 300°	Clear	Glass, Metal, Plastic, Rubber	00000000	00000

Dispensing Gun with Plunger

0000000

Each

000000

Light-Activated Epoxy Potting Compounds

Handle potted items within minutes—these potting compounds dry quickly when exposed to UV light. For added strength and durability, cure them with heat. Since they’re epoxy, they won’t break down from chemicals or moisture. They’re also excellent electrical insulators and withstand a wide range of temperatures. Use them to shield components from dust, moisture, chemicals, mechanical shock, and vibration. You need a mixer nozzle (not included) and a gun and plunger (both sold separately) to dispense. The nozzle lets you apply these compounds precisely.

For maximum effectiveness, these compounds need to be heat cured after they’re cured with UV light. Overall dry time includes heat curing at 149° F.

Potting Compounds

			Dry Time
Mfr. Model No.	Container Size, fl. oz.	Consistency	Touch, min.	Overall, hrs.	Light Intensity Requirements to Reach Full Strength	Cure Type	Temp. Range, °F	For Use On	Color		Each
Loctite® Compounds—Extra Hard
3336	1.4	Thick Liquid	5	16	60 seconds @ 30 mW/cm²	UV Light	-65° to 350°	Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Titanium, Fiberglass, Composites, Plastic, Silver	Amber	0000000	000000

Dispensing Guns

For Cartridge Size		Each
1.4 fl. oz.	0000000	000000

Plungers

For Cartridge Size		Each
1.4 fl oz.	00000000	00000

Light-Activated Silicone Potting Compounds

Cartridge

These compounds dry quickly when exposed to UV light allowing you to handle the potted items sooner. Made of silicone, they’re softer and more flexible than epoxy or urethane compounds, so they’re better at protecting against shocks and vibration. They also withstand a wider range of temperatures, so they’re often used with electronics that heat and cool rapidly. These compounds are excellent electrical insulators, and they’ll shield your components from moisture and dust. However, they don’t hold up well to abrasion or chemicals. The tapered nozzle lets you apply them precisely.

			Dry Time
Mfr. Model No.	Container Size, fl. oz.	Consistency	Touch, sec.	Overall, hrs.	Light Intensity Requirements to Reach Full Strength	Cure Type	Dielectric Strength, V/mil	Thermal Conductivity	Temp. Range, °F	Specifications Met	For Use On	Color		Each
Loctite® Compounds—Soft
5091	10 1/10	Thick Liquid	20	24	60 sec. per side @ 40 mW/cm²	UV Light	450	Not Rated	-65° to 350°	UL Recognized Component	Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Titanium, Fiberglass, Composites, Plastic, Silver	White	0000000	0000000