3M 421 Lead Foil Discs
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The 3M 421 die cut lead discs are backed with a rubber adhesive, offering excellent conformability in a variety of application conditions. These round lead discs perform well in a wide variety of termperature conditions. Electrically and thermally conductive.
Product Features
- Temperature rating: -60° to 225° F / -54° to 106° C
- Good thermal properties
- Performs well in a range of temperature conditions
- Dark silver color
- Rubber (green) adhesive
- Lead foil backing
- All die cuts 3/8" or larger come standard with a split-back liner; Split liner for smaller dimensions upon request
- Used for a variety of applications (see spec sheet)
Construction
- 4 Mil Aluminum Foil Backing
- 6.6 Mil Total Thickness
- Roll Length - 36 yards
Specifications
- Tensile Strength (lb/in) - 15
- Elongation (%) - 14
- Steel Adhesion (oz/in) - 45
CFS services many different non-masking customers and industries. From custom die cut thermal pads for LED lighting manufacturers to FDA grade silicone molded parts for medical OEMs - what we can produce from flexible materials is limited only by your imagination.