MG Chemicals 8330D-19G, Silver Conductive Epoxy Adhesive, 19.4g 2 Syringe Kit, Case of 1 Kit
MG Chemicals 8330D-19G, Silver Conductive Epoxy Adhesive, 19.4g 2 Syringe Kit, Case of 1 Kit
MG Chemicals 8330D-19G is a silver-filled, two-part electrically conductive epoxy adhesive for permanent conductive connections and cold-soldering repairs. Highly filled to maximize electrical conductivity, it combines bonding with electrical conduction where conventional soldering is unsuitable. The smooth, non-sagging, thixotropic adhesive bonds to a wide variety of substrates. MG identifies it as an improved version of its original 8330 formula.
This listing supplies one two-syringe kit containing Parts A and B, with a combined net weight of 19.4 g and net volume of 6 mL. Those quantities are totals for the kit, not for each syringe.
Best Uses / Applications
- Cold-soldering repairs on electronic assemblies.
- Conductive bonding of heat-sensitive components where soldering is unsuitable.
- Electrical connections to qualified substrates such as glass, soft metals, and plastics.
- EMI/RFI shielding seam filling between metal plates and enclosure parts.
- Localized electronics repair, prototyping, and assembly work requiring conductive adhesive rather than an insulating bond.
Key Features
- Highly silver-filled formulation designed to maximize electrical conductivity.
- Smooth, non-sagging, thixotropic consistency for localized application.
- Creates strong permanent electrical connections.
- 1:1 mixing by volume; 1.1:1 by weight, Part A to Part B.
- Room-temperature cure with optional accelerated heat-cure schedules.
- Excellent adhesion to many substrates.
- Manufacturer-listed resistance to humidity, salt water, mild bases, and aliphatic hydrocarbons.
- Room-temperature storage and long shelf life.
- Manufacturer identifies the formulation as SVHC free; consult current documentation for procurement requirements.
Technical Specifications
Values follow the manufacturer TDS dated May 19, 2026. It lists 25 minutes of working time at 22°C, while the vendor webpage still displays 20 minutes. Confirm the applicable instructions for your supplied batch when timing is critical.
| Manufacturer / SKU | MG Chemicals / 8330D-19G |
|---|---|
| Packaging | One two-syringe kit, Parts A and B |
| Combined net weight / volume | 19.4 g / 6 mL |
| Mix ratio, A:B by volume | 1:1 |
| Mix ratio, A:B by weight | 1.1:1 |
| Working time at 22°C | 25 minutes |
| Set time at 22°C | 40 minutes; not full cure |
| Cure schedules | 6 hours at room temperature; alternatively 10 minutes at 65°C or 5 minutes at 80°C |
| Service temperature range | -50 to 150°C |
| Thermal conductivity at 25°C | 2.0 W/(m·K) |
| Cured color / hardness | Silver / 84 Shore D |
| Tensile / compressive strength | 8.3 / 75 N/mm² |
| Lap shear strength | 3.6 N/mm² on stainless steel; 2.6 N/mm² on aluminum |
| Storage | 16–27°C, dry, away from sunlight; recap firmly |
| Listed shelf life | 3 years under specified storage conditions |
Preparation, Mixing & Cure
Read the kit SDS before use. The TDS recommends cleaning the substrate with isopropyl alcohol, MG 824, to remove oils, dust, and residues; confirm substrate compatibility first. Dispense one part A and one part B by volume onto a mixing surface or into a suitable container and mix thoroughly. If weighing instead, use 1.1 parts A to 1 part B. Do not use equal weights as a substitute for equal volumes.
Pull back on the plunger to stop flow, clean the nozzles to prevent contamination and buildup, and replace the caps. Choose a cure schedule compatible with the entire assembly. Working time and set time are not full cure. Qualify the completed connection for electrical, mechanical, and temperature requirements before service.
Format & Product Comparison
| Option | Distinction | Selection consideration |
|---|---|---|
| 8330D-19G | Two-syringe kit, 19.4 g / 6 mL | Small quantities of highly filled conductive adhesive; this listing |
| 8330D-160G | Two-jar kit, manufacturer-listed net weight 162 g / 50 mL | Larger format; the manufacturer webpage identifies it as made to order, not an indication of store stock |
| 8331D | Economical conductive epoxy alternative | MG recommends it when economy is the priority; verify its own specifications |
| 8330S | Different conductive epoxy formulation | MG recommends it for longer working time |
| Conductive paint | Coating rather than bonding adhesive | Broad-area shielding rather than adhesive seam filling |
Frequently Asked Questions
Is 8330D-19G a complete two-part kit?
Yes. This listing supplies one kit with separate Part A and Part B syringes.
Is 19.4 g the amount in each syringe?
No. The combined kit contains 19.4 g and 6 mL total.
What is the correct mix ratio?
Mix Part A and Part B at 1:1 by volume or 1.1:1 by weight. Thorough mixing is essential; the weight and volume ratios are not interchangeable.
Is working time 20 or 25 minutes?
The May 19, 2026 TDS lists 25 minutes at 22°C. The vendor webpage still states 20 minutes. This page follows the dated TDS; check the instructions applicable to your supplied batch.
How long does it take to cure?
The listed schedules are 6 hours at room temperature, 10 minutes at 65°C, or 5 minutes at 80°C. The 40-minute set time at 22°C is not full cure.
How does 8330D differ from 8331D?
8330D is highly filled to maximize electrical conductivity. MG identifies 8331D as the more economical alternative. Select using each formulation's current TDS and your electrical and mechanical requirements.
Can it replace solder?
It is an option for conductive bonding where soldering is unsuitable, including heat-sensitive components and certain non-solderable substrates. It is not automatically equivalent to a solder joint; qualify the repair for its intended application.
Can I use it as an electrically insulating adhesive?
No. It conducts electricity and can create shorts between adjacent conductors. Use an electrically insulating adhesive when isolation is required.
Does it require refrigerated storage?
The TDS specifies storage at 16–27°C, dry and away from sunlight, with containers firmly recapped. Refrigeration is not the specified storage condition.
