3M Heat Shrink Tubing FP-301 Flexible, Polyolefin Data Sheet November 2018 Description 3M Heat Shrink Tubing FP-301 offers an excellent balance of electrical, physical and chemical properties for a wide variety of industrial and military applications. Rated for 135C continuous operation, all 3M FP-301 tubing is split resistant, mechanically tough, easily marked and resists cold flow. 3M FP-301 tubing is rated for continuous operation at -55C (-67F) to 135C (275F), and is designed to withstand elevated temperatures to 300C (572F) for short periods. Minimum shrink temperature for all 3M FP-301 tubing is 100C (212F). Agency Approvals & Meets requirements of: Self Certifications AS23053/5, Class 1, Class 2 (Clear)* UL Recognized, File E-39100, at 600 volts maximum 125C CSA Certified, CSA LR38227, at 600 volts maximum 125C For RoHS and REACH information, please visit www.3M.com/regs *Formerly MIL-I-23053/5, MIL-DTL-23053/5 and SAE-AMS-DTL-23053/5 Applications 3M FP-301 tubing is typically used as a shrink-fit electrical insulation over cable splices and terminations. It is also used for lightweight wire harness covering, wire marking, wire bundling, component packaging and fire-resistant covering. Shrink Ratio 3M FP-301 tubing has a 2:1 shrink ratio. When freely recovered, the tubing will shrink to 50% of its as-supplied internal diameter. The recovered wall thickness is proportional to the degree of recovery. 1 of 4 3M Heat Shrink Tubing FP-301 Standard Sizes and Dimensions Ordering Expanded I.D. Recovered I.D. Recovered Wall Thickness Size (Minimum) (Maximum (Nominal) (Nominal) In. (mm) In. (mm) In. (mm) 3/64 .046 (1,17) .023 (0,58) .016 (0,41) 1/16 .063 (1,60) .031 (0,79) .017 (0,43) 3/32 .093 2,36) .046 (1,17) .020 (0,51) 1/8 .125 (3,18) .062 (1,57) .020 (0,51) 3/16 .187 (4,75) .093 (2,36) .020 (0,51) 1/4 .250 (6,35) .125 (3,18) .025 (0,64) 3/8 .375 (9,53) .187 (4,75) .025 (0,64) 1/2 .500 (12,70) .250 (6,35) .025 (0,64) 3/4 .750 (19,05) .375 (9,53) .030 (0,76) 1 1.000 (25,40) .500 (12,70) .035 (0,89) 1-1/2 1,500 (38,10) .750 (19,05) .040 (1,02) 2 2.000 (50,80) 1.000 (25,40) .045 (1,14) 3 3.000 (76,20) 1.500 (38,10) .050 (1,27) 4 4.000 (101,60) 2.000 (50,80) .055 (1,40) 2 of 4