EPO-TEK® MED-377
Technical Data Sheet
For Reference Only
Biocompatible/High Temperature, Optical Epoxy

ISO 10993 Tested/Fully Compliant
Date:
Rev:
No. of Components:
Mix Ratio by Weight:
Specific Gravity:
Pot Life:
Shelf Life- Bulk:

Biocompatible Certified Cure: 150°C / 1 Hour

February 2021
IX
Two1:1
Part A: 1.15
Part B: 1.22
24 Hours
One year at room temperature

Alternative biocompatible cure schedules may be possible,
but have not been certified. Contact med@epotek.com
with any questions.

NOTES:● Container(s) should be kept closed when not in use.
● Filled systems should be stirred thoroughly before mixing and prior to use.
● Performance properties (rheology, conductivity, others) of the product may vary from those stated on the data sheet when bi-pak/syringe packaging or
post-processing of any kind is performed. Epoxy’s warranties shall not apply to any products that have been reprocessed or repackaged from Epoxy’s
delivered status/container into any other containers of any kind, including but not limited to syringes, bi-paks, cartridges, pouches, tubes, capsules, films
or other packages.

Product Description: EPO-TEK® MED-377 is a biocompatible, high Tg, high temperature epoxy. Due to its low viscosity, it is easy touse and can be applied easily by many methods. It has excellent chemical and moisture resistance, and often used in potting fibers forendoscopes.
Typical Properties: Cure condition: 150°C / 1 Hour
Different batches, conditions & applications yield differing results.
Data below is not guaranteed. To be used as a guide only, not as a specification. * denotes test on lot acceptance basis
PHYSICAL PROPERTIES:* Color (before cure):* Consistency:* Viscosity (23°C) @ 100 rpm:
Thixotropic Index:* Glass Transition Temp:
Coefficient of Thermal Expansion (CTE):
Below Tg:
Above Tg:
Shore D Hardness:
Lap Shear @ 23°C:
Die Shear @ 23°C:
Degradation Temp:
Weight Loss:@ 200°C:@ 250°C:@ 300°C:
Suggested Operating Temperature:
Storage Modulus:
Particle Size:
OPTICAL PROPERTIES:Spectral Transmission:
Refractive Index:

Part A: Clear/Colorless
Part B: Amber
Pourable liquid
150-300 cPs
N/A≥ 95 °C (Dynamic Cure: 20-200°C/ISO 25 Min; Ramp -10-200°C @20°C/Min)
63179
78
1,856
≥ 20367
0.30
0.57
1.28
< 300459,641
N/A

96% @ 640-1640
1.5194 @589

x 10-6 in/in°C
x 10-6 in/in°C
psiKg
°C

7,112 psi%%%°C (Intermittent)
psi

nm
nm

Epoxies and Adhesives for Demanding Applications™
This information is based on data and tests believed to be accurate. Epoxy Technology, Inc. makes no warranties (expressed or implied) as toits accuracy and assumes no liability in connection with any use of this product.
EPOXY TECHNOLOGY, INC.
14 FORTUNE DRIVE, BILLERICA, MA 01821 (978) 667-3805, FAX (978) 663-9782
www.epotek.com
A Meridian Adhesives Group Company

Selected Applications for EPO-TEK® MED-377
Fiber and Electro-Optics• Potting/Impregnating fiber optic image bundles in endoscopes with highcapillary wicking forces and similarly used for surgical illumination products
whether light guides, cables, headlights and replacement parts• A high temperature / high Tg material resisting autoclave and >400 Sterrad®
sterilization cycles• A general purpose adhesive for endoscope aftermarket repairs and services, aswell as light guides and headlights• Leak and vacuum tight adhesive: enabling high vacuum (UHV)
photonic packaging

epotek.com

Surgical Tools• Adhesive for hand held stainless steel surgical tooling, resisting
steam autoclaves

Electronic Components• PZT / Ferro-electronics: adhesive for ceramic / PCB lamination, impregnating
ceramic for ultrasound kerf fabrication; carrier resin for acoustic tailoring• Power electronics: impregnating Cu coils for electric motors; bonding andpotting ferrites cores

Biocompatibility Approvals• EPO-TEK® MED-377 cured at 150° C for 1 hour has been tested and is ISO 10993 certified, meeting Hemolysis (10993-4), Cytotoxicity (10993-5),
Implantation (10993-6), Intracutaneous (10993-10), Sensitization (10993-10) and Systemic Toxicity (10993-11) test protocols.

Sterilization Information• Epoxy performance is most influenced by surface preparation and cleanliness, overall process and handling, and finally proper curing selection. While bulk
samples of MED-377 may resist sterilization technologies such as autoclave steam, gaseous technologies, gamma radiation as well as liquid disinfectants, theglue joints may differ. All users need to determine the suitability of MED-377 for their given application.
• Gamma radiation/ion beam will discolor MED-377 thus altering its UV-VIS transmission.
See our Technical Tip # 29: Gamma Sterilization for Medical Devices and its Effect on Epoxies for more information:
http://www.epotek.com/site/files/Techtips/pdfs/techtips_29.pdf• MED-377 is generally regarded for resisting ETO and gamma sterilization.
• A report from Advanced Sterilization Products®, a J&J Company, suggests MED-377 is compatible with >400 cycles of Sterrad® 100NX.

Packaging Availability• EPO-TEK® MED-377 is available in specialty packaging such as Pre-Mixed Frozen Syringes (PMF), or bulk (A & B containers).
• A video tutorial on handling frozen syringes can be found here:
http://www.epotek.com/site/technical-material/application-video-tutorials/231-proper-receiving-and-thawing.html

Med i ca l GradeEpoxy Technology Inc.

E P O - T E K®
Advanced Sterilization Products® is a registered trademark of a division of Ethicon US, LLC, a Johnson & Johnson Company.
Sterrad® is a registered trademark of J & J Company.
EPO-M377-02

14 Fortune Drive • Billerica, MA 01821
phone 978-667-3805 fax 978-663-9782
med@epotek.com© Epoxy Technology Inc. 2018