General Adhesives

Overview
Specs
Feedback

Thorlabs offers several adhesives and epoxies for general purpose use. We offer 5-minute epoxy, vacuum epoxy for low vapor pressure, Acrylic Anaerobic Adhesive (Loctite), high temperature epoxy, fiber optic connectorization epoxy, conductive silver epoxy, and an epoxy mixing kit. We also offer UV-curing adhesives and various types of tape.

Item #	F112	F120	F123	353NDPK^a
Color, Cured	Dark Blue	Transparent, Straw	Clear Reddish-Brown^b	Dark Red
Specific Gravity, Cured	1.200	1.220	1.200	1.18
Index of Refraction	1.51	n/a	1.56	1.5694 @ 589 nm
Viscosity, cPs, Mixed	1,800	14k Resin, 35k Hardener	4,000	3,000 - 5,000
Thixotropic Index	1.0	1.0	1.0	n/a
Operating Temperature Range	-60 to 120 °C	-60 to 115 °C	-60 to 175 °C	Cont: -55 to 250 °C Inter: -55 to 350 °C
Hardness, Shore D	86	72	87	85
Mix Ratio, pbw, Resin/Hardener	100/30	100/93	100/10	10:1
Glass Transition (Tg), Ultimate	102.00 °C	n/a	120.00 °C	≥90 °C
Water Absorption	0.070%	n/a	n/a	n/a
Coefficient of Expansion	6.20e01 ppm/°C	6.00e-05 cm/cm/°C	>Tg: 2.03e02 ppm/°C <Tg: 6.31e01 ppm/°C	>Tg: 54e-06 in/in/°C <Tg: 206e-06 in/in/°C
Impact, Izod	n/a	1.90 ft-lbs/inch of notch	n/a	n/a
Dielectric Strength	n/a	400 V/mil	400 V/mil	n/a
Dielectric Constant	n/a	4.40 (1 KHz @ 25 °C)	n/a	3.17 (1 KHz @ 23 °C)
Pot Life	2 g, 30 min	5 min	4 hr	3 - 4 hr
Working Life	2 g, 1 hr	n/a	n/a	n/a
Cure Schedule	24 hr @ 25 °C or 1 hr @ 65 °C or 15 min @ 90 °C	24 hr @ 25 °C or 1 hr @ 65 °C	5 min @ 100 °C	30 min @ 80 °C 10 min @ 100 °C 5 min @ 120 °C 1 min @ 150 °C

Data is not guaranteed, only for reference. Different batches, conditions, and applications yield differing results.
Unmixed color: clear light yellow. Mixed color: clear green/blue.

Item #	G14250
Adhesive Tensile Lap Shear	1.900 psi @ 0.005" Bondline
Dielectric Strength	490 Volts/mils
Impact Resistance	5.5 ft lb/in²
Service Temperature	Dry, -40 °F to 200 °F
Working Time	3-6 Minutes (28 gm @ 72 °F)
Fixture Time @ 72 °F	10 - 15 Minutes
Cure Schedule @ 72 °F	Full: 12 Hours Functional: 45 Minutes to 1 Hour

Posted Comments:

cbrideau (posted 2015-03-04 15:15:16.69)

I find the 5 min epoxy very useful, but I don't like the 2-in-one syringe design. I find that two separate smaller tubes makes it easier to mix the epoxy and hardener. Their different viscosities means the double plunger design extrudes them at different rates from the double syringe. A 'two separate small tubes' version of this product would be welcome.

cdaly (posted 2015-03-05 04:07:26.0)

Response From Chris at Thorlabs: Thank you for your feedback. I am afraid though, as we do not produce the epoxy or the dispenser ourselves, this is not a change we would be able to make to the product.

max.schiller (posted 2014-08-27 12:28:59.873)

Hi. Is TS10 suitable to fix and seal a protective glas window in an aliminium casing? The system will work in a maritime environment (salty, humid, -15 to +40 °C). Is there a better adhesive for this purpose? Regards, Max

cdaly (posted 2014-08-27 03:11:43.0)

Response from Chris at Thorlabs: That's pretty much the antithesis of the intended environment for the vacuum epoxy. If any of our epoxies were to be able to withstand the salt and humidity, it would likely be the 5-minute epoxy, G14250. There are epoxies which are specifically meant for this purpose though. Loctite's Fixmaster Underwater Repair Epoxy would be an example.

user (posted 2013-02-12 17:20:06.783)

One liquid is more viscous than the other hence it is hard to dispense equal amounts of both liquids with the attached syringe system. I had to disconnect the two syringes to get equal amounts of both.

cdaly (posted 2013-02-15 13:18:00.0)

Response from Chris at Thorlabs: The liquids themselves do have differing viscosity, so a small amount of one may pour out before the other when you initially push in the plunger. But this will balance out quickly as you push in the plunger. Both sides are identical, so movement of the plunger should dispense an equal volume.

Laurie (posted 2010-11-05 09:39:55.0)

A response from Laurie at Thorlabs to pspencer: Thank you for the kind comments that you left on our website concerning our recent upgrades. We continually strive to make changes that will enhance our customer’s buying decision and enable them to find the products they want quickly. It’s good hear that we are on the right track! If you should ever find any areas of our website that could use work, I’d appreciate it if you passed those along as well so that we can make improvements.

pspencer (posted 2010-11-05 09:08:42.0)

I like the new web site changes. Very nice... Best Regards, Paul Spencer R & D Technician

General Purpose 5-Minute Epoxy

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General Purpose, 2-Part Epoxy
Easy-to-Use Dispenser Ensures Proper Mixing Ratio

Please note that epoxy resins are prone to solidification or crystallization. If this occurs, the product can easily be returned to a liquid state by immersing the tube in warm [approximately 100 °F (38 °C)] water for 30 minutes. Ensure all material is melted prior to use. Allow the resin component to return to room temperature prior to mixing with the hardener.

Acrylic Anaerobic Adhesive

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Acrylic Adhesive & Primer
Superior Bonding of Metal, Glass, Ceramic, Nylon & Wood
Fast Cure @ Room Temperature (Sets in Seconds, Strong Bond in 1-2 Minutes)
Easy to Use - No Measuring or Mixing
Operating Temp: -54 °C to +150 °C

The LOCTITE® Speedbonder 312 anaerobic adhesive kit contains a 10 ml bottle of adhesive and a 40 g aerosol can of primer. This adhesive provides exceptionally strong bonds between similar and dissimilar materials (metal, glass, ceramic, nylon, wood and some plastics) in minutes. Bonding steel to steel, the bond strength will be ~65% after 5 minutes, ~80% after 30 minutes and a full cure is typically after 24 hours.

Shipping Regulations
Due to shipping regulations, LOC312 is only available to customers in North America with ground shipment from Newton, NJ.

Shelf Life
The shelf life of LOC312 will vary depending on the date the epoxy was packaged at the manufacturer. For information on the shelf life of LOC312, please contact Tech Support.

Vacuum Epoxy

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Seals Leaks in Vacuum Equipment Down to 10^-9 Torr
Forms a Reliable, High Strength, Long-Term Bond with Metals, Ceramics, or Glass
No Solvent Necessary to Evaporate
At Room Temperature: Hardens in 3 to 4 Hours, Cures in 72 Hours
Cures in 2 Hours at 60 °C, in 1 Hour at 82 °C, or in 20 to 30 Minutes at 121 °C
Mixing Ratio (by Volume): 2.5 Parts Resin to 1 Part Hardener
82 g (2.9 oz) Base Resin, 36 g (1.3 oz) Hardener

This epoxy resin is classified as a dangerous good in some countries. Depending on the delivery location, this item may need to be shipped separately from the rest of your order at an additional charge. Please contact our sales department if there are questions or concerns when placing an order for this item.

High Temperature & Low CTE Epoxy

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Excellent Wicking for Fiber Optic Applications
High Temperature Epoxy - Can Perform at Constant 250°C
Passes NASA Low Outgassing Standard ASTM E595 with Proper Cure
Color Changes Upon Curing From Amber to Dark Red
4 Hour Pot Life
Pre-Measured, 4 g Packs

EPO-TEK 353ND is known industry wide as a high temperature epoxy. This two part, 100% solid, heat curing epoxy can be used in applications requiring constant performance at temperatures up to 250 °C. It can handle 250 °C to 350 °C for brief periods. The epoxy is vacuum compatible and passes NASA low outgassing standard ASTM E595. Thorlabs offers 353ND epoxy in pre-measured, 4-gram packs that provide repeatable performance and eliminate the need for measuring.

Dangerous Goods
Please note that 353NDPK is classified as a dangerous good in some countries. Depending on the delivery location, this item may need to be shipped separately from the rest of your order (and possibly with a different carrier) at an additional charge. This 2-part epoxy is stocked within the USA and Germany. Please contact our sales department if there are questions or concerns when placing an order.

Shelf Life
353NDPK Epoxy has a shelf life of 365 days when stored at 23 °C. This time frame begins on the date the epoxy was packaged at the manufacturer. Upon receipt by the end user, Thorlabs guarantees that the remaining shelf life will be at least 3 months.

Fiber Connector Epoxy

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Easy-to-Use 2 g BIPAX
Sold in Packages of 10
F112 and F120 Not Intended for Use with TECS Clad Fiber

F112 Long Pot Life, Room Temperature Cure
The F112 epoxy is an ideal epoxy for making room temperature terminations. Each pack contains enough epoxy for 25 to 30 connectors. The long 30-minute pot life allows many connectors to be produced from one mix. See the Specs tab for details.

F120 Fast Room Temperature Cure
The F120 epoxy provides a combination of fast cures and low shrinkage for high performance fiber optic connections. At room temperature, the connectors are ready for polishing within 1 hour; however, fully matured bonds require 4 to 6 hours. With a pot life of only five minutes, a limited number of connections can be made using one pack. See the Specs tab for details.

F123 Color-Keyed, High-Temperature Cure
This epoxy has a unique three-step color change formulation: unmixed components are light yellow, the mixed color is green, and after the required 100 °C high-temperature cure, the color is a deep reddish-amber. Each pack contains enough epoxy for 25 to 30 connectors. The long four-hour pot life allows many connectors to be produced from one mix. See the Specs tab for details.

Dangerous Goods
The F112, F120, and F123 epoxies are classified as dangerous goods in some countries. Depending on the delivery location, these items may need to be shipped separately from the rest of your order (and possibly with a different carrier) at an additional charge. Please contact our sales department if there are questions or concerns when placing an order for these items.

Shelf Life
When stored at 25 °C, the F112 and F123 Epoxy have a shelf life of 180 days while the F120 Epoxy has one of 365 days. This time frame begins on the date the epoxy was packaged at the manufacturer. Upon receipt by the end user, Thorlabs guarantees that the remaining shelf life will be at least 3 months.

Crystallization
The epoxy resins may crystallize. Prior to mixing, the crystallized material should be warmed between 40 and 60 °C until the crystals dissolve into the solution. Afterwards, cool the material back to room temperature and use as normal.

Conductive Epoxy

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Ideal for Mounting Conductive Components that Cannot be Soldered
Low Resistance Epoxy Coating or Adhesive, 0.0007 Ohm-cm
Lap Shear: 1000 psi
Maximum Operating Temperature of 250 °F (121 °C)

Thorlabs offers Electrodag™ 5810 Conductive Epoxy for use in places where soldering is not possible. This two-component epoxy has good electrical and thermal conductivity, featuring a low volume resistance of 0.0007 Ohm-cm and a lap shear of 1000 psi. The silver-filled epoxy has a cure time of 24 hours at room temperature; the cure time can be accelerated to 2 hours at 149 °F (65 °C) or 1 hour at 212 °F (100 °C). The epoxy is packaged in two separate bags with a net weight of 4.4 grams.

The shelf life of EG58 Epoxy will vary depending on the date the epoxy was packaged at the manufacturer. For information on the shelf life of EG58 Epoxy, please contact Tech Support.

Epoxy Mixing Kits

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The EMK100 epoxy mixing kit includes 100 disposable round aluminum mixing trays, 100 mixing sticks and 250 tooth picks. This kit has been put together based on common items we use to keep epoxies as clean as possible when mixing. The trays have no oil residue and no vinyl coating which can cause contamination.

View All »Matching Part Numbers

General Adhesives

General Purpose 5-Minute Epoxy

Acrylic Anaerobic Adhesive

Vacuum Epoxy

High Temperature & Low CTE Epoxy

Fiber Connector Epoxy

Conductive Epoxy

Epoxy Mixing Kits