EPO-TEK® MED-320
Technical Data Sheet
For Reference Only
Biocompatible/Opaque Epoxy

ISO 10993-5 Tested/Compliant
Date:
Rev:
No. of Components:
Mix Ratio by Weight:
Specific Gravity:
Pot Life:
Shelf Life- Bulk:

Feruary 2021
VIITwo10 : 2
Part A: 1.10
Part B: 0.87
1 Hour
One year at room temperature

Biocompatible Certified Cure: 65°C / 1 Hour
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.
● Syringe packaging will impact initial viscosity and effective pot life, potentially beyond stated parameters.
● TOTAL MASS SHOULD NOT EXCEED 25 GRAMS

Product Description: EPO-TEK® MED-320 is a black, biocompatible, thixototropic, low temperature curing, optically opaque epoxy forfiber optics, camera and photonic packaging, often used in bonding/potting/sealing of optics used in various medical imagingelectronics.
Typical Properties: Cure condition: 65°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):
Part A: Black
Part B: Clear/Colorless* Consistency:
Slightly thixotropic paste* Viscosity (23°C) @ 100 rpm:
700 - 1,200 cPs
Thixotropic Index:
5.8* Glass Transition Temp:≥ 55 °C (Dynamic Cure: 20-200°C/ISO 25 Min; Ramp -10-200°C @20°C/Min)
Coefficient of Thermal Expansion (CTE):
Below Tg:
57 x 10-6 in/in°C
Above Tg:
149 x 10-6 in/in°C
Shore D Hardness:
80
Lap Shear @ 23°C:> 2,000 psiDie Shear @ 23°C:≥ 15 Kg
5,334 psi
Degradation Temp:
339 °C
Weight Loss:@ 200°C:
0.70 %@ 250°C:
1.27 %@ 300°C:
3.06 %
Suggested Operating Temperature:< 275 °C (Intermittent)
Storage Modulus:
467,328 psi* Particle Size:< 20 microns
OPTICAL PROPERTIES @ 23°C:
Spectral Transmission:
Refractive Index:<1% @ 300-2500
N/A

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

epotek.com

Suggested Applications for EPO-TEK® MED-320
Fiber and Electro-Optics• Opaque, light blocking adhesive (UV/VIS/IR) with fiber optic lighting,camera and video circuits and cabling• Widely used epoxy at the distal tip of endoscopes, potting and sealing LEDs,lens, CMOS camera chips, irrigational canals, and cup shaped metals andplastics parts• A general purpose adhesive for endoscope aftermarket repairs and services, aswell as light guides and headlights• Low or room temperature curing epoxy resin chemistry is ideal for
disposable applications including plastic optical fibers, catheter tubing,thermoplastics and elastomers• Slightly electrically conductive epoxy enables shielding of EMI/IR radiationfrom polluting the VIS light optics• Enabling surgical lasers and endoscopes, MED-320 received an“excellent compatibility rating” with Sterrad® (no damage 100 cycles)
sterilization process

Device, Diagnostics and Wearables• IR opaque adhesive for thermography and blood gas analysis inpatient monitoring• Suggested adhesive for wearable electronics including skin patch diabetic
monitoring, via plastic optical waveguides, and fitness style activity watches

Biocompatibility Approvals• EPO-TEK® MED-320 cured at 65°C for 1 hour has been tested and is ISO 10993-5 certified (Cytotoxicity testing by MEM Elution methodology).

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-320 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-320 for their given application.
• MED-320 can resist a few cycles of autoclave, ETO and gamma sterilization.
• A report from Advanced Sterilization Products®, a division of Ethicon US, LLC, a Johnson & Johnson Company, suggests MED-320 is compatible with100 cycles of Sterrad®; excellent compatibility:
See Technical Paper # 59: Compatibility of Medical Devices and Materials with Low Temperature Hydrogen Peroxide Gas Plasma for more information:
http://www.epotek.com/site/technical-material/technical-material.html#59

Packaging Availability• EPO-TEK® MED-320 is available in specialty packaging such as Bi-Paks, or bulk (A & B containers).
• A Bi-Pak video tutorial can be found here:
http://www.epotek.com/site/technical-material/application-video-tutorials/117-effective-handling-and-mixing-of-epo-tek®-bi-packs.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-M320-03

14 Fortune Drive • Billerica, MA 01821
phone 978-667-3805 fax 978-663-9782
med@epotek.com© Epoxy Technology Inc. 2019