PermaSleeve® PS Heat-Shrink Polyolefin (B-342) wire marking sleeves combine speed, ease of use, and permanence to create long-lasting, high quality identification. 3:1 heat shrinkable sleeve fit snugly around wires for maximum insulation protection and permanent identification. Fade-resistant and smudge-proof for superior aesthetic appearance. Cold resistant and flame-retardant with an operating temperature of -67°F to 275°F (-55°C to 135°C). Meets SAE-AMS-DTL-23053/5C (Class 1), SAE-AS-81531, MIL-STD-202;RoHS Compliant;and UL Recognized. A ribbon is required to print this material. Use Part Number B30-R4300.