---
product_id: 34818137
title: "MG Chemicals 842AR-P Silver Conductive Pen, 8.6g"
brand: "mg chemicals"
price: "¥17404"
currency: JPY
in_stock: true
reviews_count: 12
category: "Mg Chemicals"
url: https://www.desertcart.jp/products/34818137-mg-chemicals-842ar-p-silver-conductive-pen-8-6g
store_origin: JP
region: Japan
---

# 0.0001 Ω·cm resistivity Dries to touch in minutes 0.9 mm typical trace width MG Chemicals 842AR-P Silver Conductive Pen, 8.6g

**Brand:** mg chemicals
**Price:** ¥17404
**Availability:** ✅ In Stock

## Summary

> ⚡ Fix it fast, fix it smart—conductivity at your fingertips!

## Quick Answers

- **What is this?** MG Chemicals 842AR-P Silver Conductive Pen, 8.6g by mg chemicals
- **How much does it cost?** ¥17404 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/34818137-mg-chemicals-842ar-p-silver-conductive-pen-8-6g)

## Best For

- mg chemicals enthusiasts

## Why This Product

- Trusted mg chemicals brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Rapid Drying Formula:** Get your projects back in action within minutes—no downtime, no delays.
- • **Ultra-Low Resistivity:** Ensures lightning-fast, reliable conductivity for flawless circuit repairs.
- • **DIY Electronics Savior:** Perfect for quick fixes on keyboards, remotes, and PCBs—join the maker movement and never miss a beat.
- • **Precision Trace Control:** Draw ultra-fine 0.9 mm conductive lines with ease for professional-grade results.
- • **Versatile Surface Adhesion:** Bonds seamlessly to plastics, metals, ceramics, and 3D printing materials—one pen, endless possibilities.

## Overview

The MG Chemicals 842AR-P Silver Conductive Pen delivers ultra-low resistivity (0.0001 Ω·cm) conductive ink in a convenient pen format, drying to touch within minutes. Designed for precision with a typical 0.9 mm trace width, it adheres to a wide range of substrates including plastics, metals, ceramics, and 3D printing materials. Ideal for rapid prototyping, circuit repairs, and enhancing EMI/RFI shielding, this pen empowers professionals and makers to restore and innovate with confidence.

## Description

The 842AR-P Silver conductive pen is an extremely conductive, fast drying paint in a convenient pen format. It quickly and easily creates durable, reliable, corrosion resistant, and highly conductive traces. It adheres to a wide variety of substrates. This product works best on smooth, flat, and hard surfaces. It has a Valve tip that opens when the pen is pressed against the surface to be drawn on and it has a soft tube, so the flow may be controlled by squeezing the center of the pen. Applications & usages it is used to draw traces on circuit boards or to create simple circuits on a variety of surfaces for prototyping, hobbies, or Maker projects. It can be used to repair damaged traces on keyboards, game controllers, remote controls, mixing boards, and pcb’s. Repaired devices may be returned to service in only 10 minutes. It is also great for making small connections in or between circuits such as jumpers, through-holes, bridges, and links. It is also good for increasing the surface area of contacts by painting the area around them. It is also great for filling gaps in your EMI/RFI shielding. Attention! shake rigorously before use. For best results hold pen at angle, depress pen tip against surface, and draw pen across surface while gently squeezing middle.

Review: Fixed my control panel keypad - I'm very glad this product exists. Saved me hundreds of dollars! The material flows pretty well once you get the hang of it. It's similar to a paint pen, but with nickel in solvent. Let it dry! It wont conduct until the metal settles and the solvent dries. It was fun to use a multimeter and watch the resistance drop as the fluid cured. I used this to repair a laminated keypad ribbon cable in a microwave that somehow got a melty trace. I also used it to repair the damage I did trying to fix the problem before i knew this product existed. It will now and forever be a part of my electronics kit. Perfect for membrane trace repair! Adhesion is good on plastic. The output width is about 2mm. It's a fluid but not super runny, especially after the solvent flashes off. Build up a couple of coats for best conduction. It takes a minute to get used to dispensing the material. The pen uses a plunger valve tip that has to be pushed against the surface before flow will start. You control the flow with how hard the tube is squeezed. Wiping the tip after every lift-up makes things go smoother.
Review: The product works, but the delivery mechanism is hard to use. - The product itself absolutely works. Based on my experience, I suspect anybody who claims otherwise had a technique issue. Because the pen itself is a pain in the butt to use, produces a relatively thick line, and has every bit of the problem with rollerball pens that use thick inks. Add the necessity to press the bulb to get the ink to flow at all and it's not a recipe for ease of use. I took a point off for that, but the product self is working for my use case (repairing the traces on a flex ribbon cable for a 35-year old IBM Model M keyboard) so four stars for that. If you have a steady hand with a fine detail brush and can get a pot of the ink that might be a better way to go. Or perhaps a sacrificial dip pen.

## Features

- Creates durable, reliable, highly conductive connections
- Volume resistivity: 0.0001 ohms·cm
- Typical trace width: 0.9 mm
- Dries to touch in minutes
- Adheres to plastics, epoxy, copper, aluminum, ceramics, wood, and most electronic substrates as well as ABS, PLA, and other 3D printing plastics

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01LYXQE0M |
| Best Sellers Rank | #194,961 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #81 in Electrically Conductive Adhesives |
| Date First Available | September 24, 2016 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.882 ounces |
| Item model number | 842AR-P |
| Manufacturer | MG Chemicals |
| Product Dimensions | 1.01 x 7.81 x 2.02 inches |

## Images

![MG Chemicals 842AR-P Silver Conductive Pen, 8.6g - Image 1](https://m.media-amazon.com/images/I/61Xp3aHJW2L.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Questions & Answers

**Q: Will this work to coat the non-working rubber buttons on a remote control**
A: Yes, this worked great. First, clean the circuit board where the contacts are using Isopropyl alcohol.  I also used Iso to clean off the rubber dot, which is usually a conductive carbon substance.  Then apply the *carbon* version of this product to the black dot.  Cover the whole surface and let it dry completely before re-assembling.

**Q: Can this be used to repair a broken strip in a car rear defogger?**
A: I just tested a 1/2" long x1/8" wide strip on a piece of pyrex glass and got 0 resistance for that length. It seems to conduct well for a short distance and stuck to the glass very well. I hope this helps.

**Q: Does it work for making a PCB?**
A: In my opinion, it's far from the ideal for making your own PCB. I can see it being used for prototyping of low voltage/low current circuits.This particular compound is based on nickel, which is not a as conductive as copper.This pen would work fine for the small repairs like cuts or tears in the existing PCB traces. BTW, there's a more conductive version of this pen which is based on silver.Aside from conductivity issue, there's an issue of securing parts to PCB. I,also, doubt you can solder to the trace drawn with this pen.

**Q: Is this pen good for making a jumper on a circuit board?**
A: Yes, it's great for that but even the carbon conductive (lowest quality) pen would work for that

## Customer Reviews

### ⭐⭐⭐⭐⭐ Fixed my control panel keypad
*by L***K on October 5, 2023*

I'm very glad this product exists. Saved me hundreds of dollars! The material flows pretty well once you get the hang of it. It's similar to a paint pen, but with nickel in solvent. Let it dry! It wont conduct until the metal settles and the solvent dries. It was fun to use a multimeter and watch the resistance drop as the fluid cured. I used this to repair a laminated keypad ribbon cable in a microwave that somehow got a melty trace. I also used it to repair the damage I did trying to fix the problem before i knew this product existed. It will now and forever be a part of my electronics kit. Perfect for membrane trace repair! Adhesion is good on plastic. The output width is about 2mm. It's a fluid but not super runny, especially after the solvent flashes off. Build up a couple of coats for best conduction. It takes a minute to get used to dispensing the material. The pen uses a plunger valve tip that has to be pushed against the surface before flow will start. You control the flow with how hard the tube is squeezed. Wiping the tip after every lift-up makes things go smoother.

### ⭐⭐⭐⭐ The product works, but the delivery mechanism is hard to use.
*by M***S on October 1, 2025*

The product itself absolutely works. Based on my experience, I suspect anybody who claims otherwise had a technique issue. Because the pen itself is a pain in the butt to use, produces a relatively thick line, and has every bit of the problem with rollerball pens that use thick inks. Add the necessity to press the bulb to get the ink to flow at all and it's not a recipe for ease of use. I took a point off for that, but the product self is working for my use case (repairing the traces on a flex ribbon cable for a 35-year old IBM Model M keyboard) so four stars for that. If you have a steady hand with a fine detail brush and can get a pot of the ink that might be a better way to go. Or perhaps a sacrificial dip pen.

### ⭐⭐⭐⭐⭐ It works if you persevere.
*by D***F on September 8, 2022*

The first pen that arrived had mechanical problems that made it useless. I am giving a 5 star rating because of MG Chemicals excellent customer service. On my complaint, they sent me another pen forthwith. I used it to draw a missing trace on a PCB. It won't be as pretty as a manufactured trace but it will do the job. It can be a challenge to get the ink to flow but eventually it will. My PCB is saved thanks to MG Chemicals.

## Frequently Bought Together

- MG Chemicals 842AR-P Silver Conductive Pen, 8.6g
- MG Chemicals 8331D Silver Conductive Epoxy Adhesive, High Conductivity, 20 min Working time, 2-Part, 14 Gram Kit

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-03*