EPO-TEK® MED-323LP
Technical Data Sheet
For Reference Only
Biocompatible/High Temperature, Optical 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: 150°C / 1 Hour

February 2021
VIIITwo
10 : 1
Part A: 1.21
Part B: 1.08
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-323LP is a biocompatible, high strength, high temperature, high Tg, long pot-life epoxy. It is
used in many medical applications for adhesive, potting, sealing and encapsulation, especially suited for use in fiber optics, endoscope,implants and surgical tooling.
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):
Part A: Clear to slight yellow Part B: Yellow* Consistency:
Pourable liquid* Viscosity (23°C) @ 50 rpm:
3,500-5,000 cPs
Thixotropic Index:
N/A* Glass Transition Temp:≥ 100 °C (Dynamic Cure: 20-200°C/ISO 25 Min; Ramp -10-200°C @20°C/Min)
Coefficient of Thermal Expansion (CTE):
Below Tg:
56 x 10-6 in/in°C
Above Tg:
182 x 10-6 in/in°C
Shore D Hardness:
84
Lap Shear @ 23°C:> 2,000 psi
Die Shear @ 23°C:≥ 20 Kg
7,112 psi
Degradation Temp:
428 °C
Weight Loss:@ 200°C:
0.03 %@ 250°C:
0.09 %@ 300°C:
0.29 %
Suggested Operating Temperature:< 350 °C (Intermittent)
Storage Modulus:
431,884 psi
Particle Size:
N/A
OPTICAL PROPERTIES @ 23°C:
Spectral Transmission:
Refractive Index:≥ 90% @ 680-1580
1.5711 @ 589nm
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-323LP
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,
broncho-scopes and micro ophthalmoscopes; healthcare optics forcolonoscopy, urology, and otolaryngology• Fiber optic enabled OCT imaging delivered via catheter• Fiber optic adhesive for surgical lighting and optics including loupes andendoscopic aftermarket repair adhesive.
• Fiber optic catheter lasers for photo dynamic therapy in tumor
removal treatments

Imaging Technologies• OCT using NIR laser for cardiac and ophthalmic imaging• Endoscopy with camera and video interface• Capsule endoscopes for GI tract viewing and monitoring• Ultrasound imaging• Dental reconstruction using hand-held laser scanner• Vitreo-Retinal imaging using micro ophthalmic optics• Temperature probes integration, subcomponent bonding and final assembly ofMRI and CT machines

epotek.com

Life Sciences and MicroFluidics• DNA and gene sequencers, readers and amplification circuits• Water purity, testing, monitoring and flow delivery systems

Device and Diagnostics• Sensor integration and subcomponents for respiratory, anesthesia, vapor andsuction; gas and liquid flow monitoring• Irrigation and pharmaceutical delivery via ultrasonic nebulizers• SpO2 patient monitoring; capnography, gas analyzers and flow meters• Adhesive for anesthesia and gas analyzers, and flow meters• Widely used adhesive for pressure and pH monitoring catheters• Implantable Devices• Hearing aids and implants; acoustic circuits and structural assembly

Surgical Tools• High power laser optics for general, reconstructive and cosmetic surgery• Fabrication of Rf Ablation catheters• Single use microwave ablation probes for tumor removal• Impregnating coil motors in orthopedic bone saws
• General catheter delivery and extraction tools• Fiber Optic laser enabled biopsies

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 transducers, ultrasound probe
repair adhesive• Repair adhesive for ultrasound probe• Imaging modalities based on Doppler Radar

Biocompatibility Approvals• EPO-TEK® MED-323LP cured at 150°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-323LP 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-323LP for their given application.
• MED-323LP is generally capable of resisting hundreds of autoclave and Sterrad® sterilization cycles.
• MED-323LP 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-323LP is available in specialty packaging such as Pre-Mixed Frozen Syringes (PMF), 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• 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®
Sterrad® is a registered trademark of J & J Company
EPO-M323LP-02

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