163503 - Miller 163503 Mylar Insulation Strip Type EL (10 Pack)

Keep Your Miller Machine Running with Genuine Parts

When you are deep into a repair on a Miller welder, the last thing you want to do is improvise with the internal insulation. The Miller 163503 Mylar Strip is the exact replacement part you need to ensure your machine's internals are properly spaced and insulated. These small but mighty strips are often overlooked until you open up a case and find the old ones brittle, cracked, or missing entirely. Don't risk a short circuit that could fry your main board—stick with the genuine article.

This pack comes with 10 strips, which is perfect for the service bench. Each strip measures .005 inches thick and is cut to a precise .875 x .875 inch square. They are made from Type EL Mylar, a material known for being tough and resistant to the kind of heat and electrical stress found inside a welding power source. Because they are OEM (Original Equipment Manufacturer) parts from Miller Electric, you don't have to worry about trimming them to size or wondering if they have the right heat rating. They drop right in where they are supposed to go.

We know that downtime costs money. Whether you are a professional repair technician or a fabricator doing your own maintenance, having the right small parts on hand makes the difference between a quick fix and a week-long wait. These strips are used in various Miller units to prevent metal-to-metal contact in critical areas. If you are rebuilding a wire feeder or servicing a power source, check your parts diagram. If it calls for part number 163503, this is the 10-pack you need.

Don't cut corners with electrical tape or generic plastic that might melt or shift. Welding machines generate a lot of heat and vibration. Using the correct Mylar shim ensures that your repair lasts and your machine stays safe to operate. Add a pack to your cart and keep your Miller equipment welding like it did the day it left the factory.