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See Product Specifications
| Part Number: | 3M 420 4" X 4"-25 | 
| Category: | Tapes, Adhesives, Materials | 
| Subcategory: | Tape | 
| Manufacturer: | 3M (TC) | 
| Packaging: | Bulk | 
| Product Status: | Active | 
| Tape Type: | Lead Foil | 
| Adhesive: | Rubber | 
| Backing, Carrier: | Lead Foil | 
| Thickness: | 0.0068" (6.8 mils, 0.173mm) | 
| Thickness - Adhesive: | 0.0021" (2.1 mils, 0.053mm) | 
| Thickness - Backing, Carrier: | 0.0047" (4.7 mils, 0.119mm) | 
| Width: | 4.00" (101.60mm) | 
| Length: | 4.00" (101.60mm) | 
| Color: | Silver | 
| Usage: | - | 
| Temperature Range: | -60°F ~ 225°F (-50°C ~ 106°C) |