EPO-TEK® MED-302-3M
Technical Data Sheet
For Reference Only
Biocompatible/Optically Transparent Epoxy

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

Biocompatible Certified Cure: 80°C / 2 Hours

February 2021
VIITwo10 : 4.5
Part A: 1.19
Part B: 0.97
< 1 HourOne 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.
● Syringe packaging will impact initial viscosity and effective pot life, potentially beyond stated parameters.
● TOTAL MASS SHOULD NOT EXCEED 25 GRAMS● Contact techserv@epotek.com for alternatives designed to meet European regulatory requirements.

Product Description: EPO-TEK® MED-302-3M is a biocompatible, clear and colorless, low viscosity epoxy, with high moisture andchemical resistance and is room temperature curing. Additional characteristics are: can be used in the optical pathway withtransmission in the VIS/NIR range from 350-1550nm, easily wicks into fiber bundles for endoscopes and light guides, and has excellent
adhesion to SST, ceramic, titanium and most plastics.
Typical Properties: Cure condition: 80°C / 2 Hours
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: Clear/Yellow tint
Pourable liquid
800-1,600 cPs
N/A≥ 55 °C (Dynamic Cure: 20-200°C/ISO 25 Min; Ramp -10-200°C @20°C/Min)
61
198
79
> 2,000≥ 15379
0.48
1.00
1.93
< 300452,526
N/A> 97% @ 360-1620
1.5458 @589

x 10-6 in/in°Cx 10-6 in/in°C
psiKg°C

5,334 psi%%%°C (Intermittent)
psinm
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-302-3M
Fiber and Electro-Optics• Impregnating and terminating fiber optic image bundles and light guides,
adhesive for flexible endoscopes, adhesion to plastic and glass optical fibers,
structural and near hermetic sealing of glass, ceramic and metals• Manufacture of all kinds of endoscopes, such as, laryngoscopes, gastroscopes,bronchoscopes and micro ophthalmoscopes; healthcare optics forcolonoscopy, urology, and otolaryngology• Endoscopy with camera and video interface

Imaging Technologies• OCT using NIR laser for cardiac and ophthalmic imaging• Capsule endoscopes for GI tract viewing and monitoring• Temperature probes integration, subcomponent bonding and final assemblyof MRI and CT machines

Ultrasound / Ultrasonic• Adhesive for catheter delivered surgical mapping. 3D imaging and mapping
catheters; catheter ultrasound for cardiac therapy, such as AFib treatments• Front-end ultrasound fabrication adhesive responsible for PZT arrays• Back-end PZT processes enabling transducer; ultrasound probe
repair adhesive

Life Sciences and MicroFluidics• DNA and gene sequencers, readers and amplification circuits• Potting, over-coating and weather proofing, fitness style wrist watches andwearable devices

epotek.com

Device and Diagnostics• Sensor integration and subcomponents for respiratory, anesthesia, vapor andsuction; gas and liquid flow monitoring• SpO2 patient monitoring; capnography, gas analyzers and flow meters• Adhesive for pressure and pH monitoring catheters

Implantable Devices• Subcomponents for Ventricular Assist Devices (VAD) fabrication including
pumps, coils and magnets• Adhesive for ophthalmic implants; plastic bonding in intraocular lens (IOL).
Micro sensors for intraocular pressure• Hearing aids and implants; acoustic circuits and structural assembly• Enabling neurostimulator technologies used for sleep apnea,
bladder control and other conditions• Adhesive for pacemakers, ICDs and IPGs
• Neurovascular implants treating aneurysm, stroke, epilepsy andParkinson’s Disease

Surgical Tools• High power laser optics for surgery• Dental device adhesive, lighting or hand instrument and camera• Adhesive for neurovascular surgical delivery systems and coils fortreating aneurysms• Fabrication of Rf Ablation catheters, electro-surgical tool fortissue removal• Laser for peripheral artery disease (PAD); atherectomy technologies• Dental crown/post

Biocompatibility Approvals• EPO-TEK® MED-302-3M cured at 80°C for 2 hours 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-302-3M may resist sterilization technologies such as autoclave steam, gaseous technologies, gamma radiation as well as liquid disinfectants,
the glue joints may differ. All users need to determine the suitability of MED-302-3M for their given application.
• Gamma Radiation/ion beam will discolor MED-302-3M, thus altering its appearance.
• MED-302-3M is generally regarded for resisting hundreds of autoclave and Sterrad® sterilization cycles.
• MED-302-3M is generally regarded for resisting few cycles of ETO and gamma radiation.
See 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

Packaging Availability• EPO-TEK® MED-302-3M 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 Grade
Epoxy Technology Inc.

E P O - T E K®
Sterrad® is a registered trademark of J & J Company
EPO-M302-3M-03

14 Fortune Drive • Billerica, MA 01821
phone 978-667-3805 fax 978-663-9782
med@epotek.com© Epoxy Technology Inc. 2018-19