Fiber Optic Epoxies & Supplies
- Long Pot Life Epoxies
- High Glass Transition Temperature Epoxies
- 5-Minute Epoxies
General Purpose 5-Minute Epoxy
Long Pot Life Epoxy
Fiber optic epoxy is a necessary component when terminating pigtailed fiber connectors. Thorlabs offers epoxies for a wide range of curing conditions as well as an application syringe. Refer to the individual descriptions below for details about our selection. Additional options include general-purpose epoxies and UV-curing adhesives.
|Color, Cured||Dark Blue||Clear/Colorless (Part A)
Clear/Yellow Tint (Part B)
|Clear Reddish-Brownb||Dark Red|
|Specific Gravity, Cured||1.200||1.16 (Part A)
1.05 (Part B)
|1.200||1.20 (Part A)
1.02 (Part B)
|Index of Refraction||1.51||1.5459 @ 589 nm||1.56||1.5694 @ 589 nm|
|Viscosity, cPs, Mixed||1,800||N/A||4,000||3,000 - 5,000|
|Operating Temperature Range||-60 to 120 °C||Cont: -55 to 175 °C
Inter: -55 to 275 °C
|-60 to 175 °C||Cont: -55 to 250 °C
Inter: -55 to 350 °C
|Hardness, Shore D||86||80||87||85|
|Mix Ratio, pbw, Resin/Hardener||100/30||2/1||100/10||10:1|
|Glass Transition (Tg), Ultimate||102.00 °C||56 °C||120.00 °C||≥90 °C|
|Coefficient of Expansion||6.20e01 cm/cm/°C||N/A||>Tg: 2.03e02 ppm/°C
<Tg: 6.31e01 ppm/°C
|>Tg: 54e-06 in/in/°C
<Tg: 206e-06 in/in/°C
|Dielectric Strength||N/A||N/A||400 V/mil||N/A|
|Dielectric Constant||N/A||N/A||N/A||3.17 (1 KHz @ 23 °C)|
|Pot Life||2 g, 30 min||<5 min||4 hr||≤3 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
|30 min @ 23 °C
|5 min @ 100 °C||30 min @ 80 °C
10 min @ 100 °C
5 min @ 120 °C
1 min @ 150 °C
- 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.
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.
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.
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.
- 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.
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.
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.
- 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.
Empty Syringes For Epoxy Applications
Thorlabs offer 3 cc syringes in bags of 10, which are ideal for epoxy applications. Epoxies, such as our F112, come in a BIPAK with pre-measured amounts of the 2-part epoxy. After mixing the epxoy the contents of these packs can be emptied into a syringe for easy application.
We recommend our fiber optic disposal unit (FTDU, sold separately) to properly dispose of all syringes and epoxy.