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| Part Number | F221B1IN BK203 | 
| Datasheet | F221B1IN BK203 datasheet | 
| Description | HEAT SHRINK TUBE 1IN BK 250 | 
| Manufacturer | Alpha Wire | 
| Series | FIT®-221B | 
| Part Status | Active | 
| Type | Tubing, Flexible | 
| Shrinkage Ratio | 2 to 1 | 
| Length | 250.0' (76.2m) | 
| Inner Diameter - Supplied | 1.000" (25.40mm) | 
| Inner Diameter - Recovered | 0.500" (12.70mm) | 
| Recovered Wall Thickness | 0.035" (0.89mm) | 
| Material | Polyolefin (PO), Irradiated | 
| Features | Flame Resistant, Fluid Resistant, UV Resistant | 
| Color | Black | 
| Operating Temperature | -55°C ~ 135°C | 
| Shrink Temperature | 90°C |