What are Heat Shrink Boots, Caps ?
Heat Shrink Boots, Caps are protective coverings designed to insulate and secure electrical connections. They are widely used in applications such as board-to-board and cable interconnects, as well as in production electronics assembly. Important specifications for selection include Color, which aids in identification; Material, which affects durability and heat resistance; and Large Diameter Recovered, which ensures a proper fit over connectors. Procurement teams should validate lifecycle status and consider alternate-source options to mitigate sourcing risks.
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| Part & Mfr | Color | Features | Large Diameter Recovered | Large Diameter Supplied | Large Recovered Length | Material | Shell Size | Small Diameter Recovered | Small Diameter Supplied | Small Recovered Length | Total Length Recovered | Total Length Supplied | Type | |||
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- | - | 0.531" (13.49mm) | 1.118" (28.40mm) | 2.760" (70.10mm) | Zerohal™ | - | 0.531" (13.49mm) | 1.059" (26.90mm) | 3.161" (80.29mm) | 5.909" (150.09mm) | - | Boot, Transition - Side Breakout, 45° | |
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Black | Chemical Resistant, Lip | 1.752" (44.50mm) | 2.600" (66.04mm) | 3.540" (89.92mm) | Fluoroelastomer (FKM), Flexible | 85 | 0.661" (16.79mm) | 1.496" (38.00mm) | 2.760" (70.10mm) | 6.690" (169.93mm) | - | Boot | |
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Black | Drain Holes, Flame Retardant, Fluid Resistant, Fuel Resistant, Heat Resistant, Lip | 0.902" (22.91mm) | 1.340" (34.04mm) | 0.858" (21.79mm) | Fluoroelastomer (FKM), Flexible, Irradiated | 42 | 0.382" (9.70mm) | 0.839" (21.31mm) | 5.220" (132.59mm) | 6.780" (172.21mm) | - | Boot - 90° | |
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Black | Flame Retardant, Fluid Resistant, Fuel Resistant, Heat Resistant, Lip | 0.902" (22.91mm) | 1.340" (34.04mm) | 0.858" (21.79mm) | Fluoroelastomer (FKM), Flexible, Irradiated | 42 | 0.382" (9.70mm) | 0.839" (21.31mm) | 2.440" (61.98mm) | 4.000" (101.60mm) | - | Boot - 90° | |
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Black | - | 1.090" (27.69mm) | 2.050" (52.07mm) | 3.000" (76.20mm) | Elastomer, Fluid Resistant | 34 | 0.280" (7.11mm) | 0.800" (20.32mm) | - | 4.250" (107.95mm) | - | Boot, Transition - Breakout, 4:1 | |
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Black | Adhesive Coating, Flame Retardant, Fluid Resistant, Heat Resistant, Strain Resistant | 1.189" (30.20mm) | 2.189" (55.60mm) | 4.850" (123.19mm) | Polyolefin (PO), Flexible, Irradiated | 48 | 1.189" (30.20mm) | 2.189" (55.60mm) | 4.850" (123.19mm) | 9.701" (246.41mm) | - | Boot, Transition - Breakout, 2:1 (T) | |
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Black | - | 0.449" (11.40mm) | 1.350" (34.29mm) | 2.370" (60.20mm) | NBCCS, Flexible | 12 | 0.449" (11.40mm) | 0.902" (22.91mm) | 2.370" (60.20mm) | 4.740" (120.40mm) | - | Boot, Transition - Breakout, 2:1 (T) | |
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Black | - | 1.050" (26.67mm) | 2.190" (55.63mm) | 4.270" (108.46mm) | Elastomer, Fluid Resistant | 67 | 0.510" (12.95mm) | 1.060" (26.92mm) | 3.640" (92.46mm) | - | - | Boot, Transition - Breakout, 4:1 | |
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Black | Adhesive Coating, Fluid Resistant | 1.051" (26.70mm) | 2.189" (55.60mm) | 4.272" (108.51mm) | Elastomer, Semi-Rigid | 67 | 0.512" (13.00mm) | 1.060" (26.92mm) | 3.642" (92.51mm) | - | - | Boot, Transition - Breakout, 4:1 | |
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Black | - | 0.315" (8.00mm) | 0.787" (19.99mm) | 0.984" (24.99mm) | Fluoroelastomer (FKM), Flexible | - | 0.157" (3.99mm) | 0.354" (8.99mm) | 1.260" (32.00mm) | - | - | Boot, Transition - Breakout, 2:1 (Y) | |
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Black | - | 1.730" (43.94mm) | 3.300" (83.82mm) | 3.500" (88.90mm) | Elastomer, Fluid Resistant | 45 | 0.500" (12.70mm) | 1.420" (36.07mm) | - | 5.000" (127.00mm) | - | Boot, Transition - Breakout, 4:1 | |
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Black | - | 1.730" (43.94mm) | 3.300" (83.82mm) | 3.500" (88.90mm) | Polyolefin (PO), Semi-Rigid | 45 | 0.500" (12.70mm) | 1.420" (36.07mm) | - | 5.000" (127.00mm) | - | Boot, Transition - Breakout, 4:1 | |
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- | - | - | - | - | - | - | - | - | - | - | - | - | |
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Black | - | 1.311" (33.30mm) | 3.280" (83.31mm) | 4.772" (121.21mm) | EPB | 14 | 1.311" (33.30mm) | 2.161" (54.89mm) | 4.772" (121.21mm) | 9.539" (242.29mm) | - | Boot, Transition - Breakout, 2:1 (T) | |
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Black | - | 1.051" (26.70mm) | 2.189" (55.60mm) | 4.272" (108.51mm) | Polyolefin (PO), Flexible | 67 | 0.512" (13.00mm) | 1.060" (26.92mm) | 3.642" (92.51mm) | - | - | Boot, Transition - Breakout, 4:1 | |
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Black | - | 1.051" (26.70mm) | 2.189" (55.60mm) | 4.272" (108.51mm) | Elastomer, Semi-Rigid | 67 | 0.512" (13.00mm) | 1.060" (26.92mm) | 3.642" (92.51mm) | - | - | Boot, Transition - Breakout, 4:1 | |
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Black | - | 0.791" (20.10mm) | 2.370" (60.20mm) | 4.079" (103.61mm) | NBCCS, Flexible | 23 | 0.791" (20.10mm) | 1.421" (36.09mm) | 4.079" (103.61mm) | 8.161" (207.29mm) | - | Boot, Transition - Breakout, 4:1 | |
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- | - | - | - | - | - | - | - | - | - | - | - | - | |
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Black | - | 0.520" (13.21mm) | 1.060" (26.92mm) | 1.690" (42.93mm) | Fluoroelastomer (FKM), Flexible | 23 | 0.272" (6.91mm) | 0.520" (13.21mm) | 1.980" (50.29mm) | 3.669" (93.19mm) | - | Boot, Transition - Breakout, 3:1 | |
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Black | - | 1.730" (43.94mm) | 3.300" (83.82mm) | 3.500" (88.90mm) | Elastomer, Fluid Resistant | 45 | 0.500" (12.70mm) | 1.420" (36.07mm) | - | 5.000" (127.00mm) | - | Boot, Transition - Breakout, 4:1 | |
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Black | Flame Retardant | 0.900" (22.86mm) | 1.750" (44.45mm) | 1.590" (40.39mm) | Polyolefin (PO), Semi-Rigid | 34 | 0.320" (8.13mm) | 0.870" (22.10mm) | 1.200" (30.48mm) | 3.500" (88.90mm) | - | Boot, Transition - Breakout, 3:1 | |
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Black | - | 0.260" (6.60mm) | 0.780" (19.81mm) | 1.600" (40.64mm) | Fluoropolymer | 1 | 0.260" (6.60mm) | 0.520" (13.21mm) | 1.600" (40.64mm) | - | - | Boot, Transition - Breakout, 2:1 (Y) | |
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Black | - | 0.791" (20.10mm) | 2.370" (60.20mm) | 4.079" (103.61mm) | EPB | 23 | 0.791" (20.10mm) | 1.421" (36.09mm) | 4.079" (103.61mm) | 8.161" (207.29mm) | - | Boot, Transition - Breakout, 3:1 | |
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Black | - | - | - | - | Fluoroelastomer (FKM), Flexible | 3 | - | - | - | - | - | Boot, Transition - Breakout, 2:1 (Y) | |
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Black | - | 1.110" (28.19mm) | 1.680" (42.67mm) | - | Fluoroelastomer (FKM), Flexible | - | 0.390" (9.91mm) | 1.449" (36.80mm) | 0.969" (24.60mm) | 2.480" (62.99mm) | - | Boot | |
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Black | - | 1.110" (28.19mm) | 1.680" (42.67mm) | - | Fluoroelastomer (FKM), Flexible | - | 0.390" (9.91mm) | 1.449" (36.80mm) | 0.969" (24.60mm) | 2.480" (62.99mm) | - | Boot | |
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Black | - | 0.700" (17.78mm) | 0.940" (23.88mm) | - | Fluoroelastomer (FKM), Flexible | 22 | 0.220" (5.59mm) | 0.940" (23.88mm) | - | - | - | Boot - 45° | |
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Black | - | 1.051" (26.70mm) | 2.189" (55.60mm) | 4.272" (108.51mm) | Polyolefin (PO), Semi-Rigid | 67 | 0.512" (13.00mm) | 1.060" (26.92mm) | 3.642" (92.51mm) | - | - | Boot, Transition - Breakout, 4:1 | |
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Black | - | 0.449" (11.40mm) | 1.000" (25.40mm) | 2.480" (62.99mm) | Fluoropolymer | 32 | 0.295" (7.49mm) | 0.598" (15.19mm) | 2.480" (62.99mm) | - | - | Boot, Transition - Breakout, 2:1 (Y) | |
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Black | - | 1.000" (25.40mm) | 2.189" (55.60mm) | 3.500" (88.90mm) | Polyolefin (PO), Flexible | 46 | 0.488" (12.40mm) | 1.060" (26.92mm) | 4.059" (103.10mm) | 7.560" (192.02mm) | - | Boot, Transition - Breakout, 3:1 | |
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Black | - | 1.000" (25.40mm) | 2.189" (55.60mm) | 3.500" (88.90mm) | Polyolefin (PO), Flexible | 46 | 0.488" (12.40mm) | 1.060" (26.92mm) | 4.059" (103.10mm) | 7.560" (192.02mm) | - | Boot, Transition - Breakout, 3:1 | |
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Black | - | 0.570" (14.48mm) | 1.220" (30.99mm) | 1.770" (44.96mm) | Elastomer, Fluid Resistant | 15 | 0.630" (16.00mm) | 0.770" (19.56mm) | 2.630" (66.80mm) | - | - | Boot, Transition - Breakout, 4:1 | |
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Black | Adhesive Coating, Fluid Resistant | 1.000" (25.40mm) | 2.189" (55.60mm) | 3.500" (88.90mm) | Elastomer, Semi-Rigid | 46 | 0.488" (12.40mm) | 1.060" (26.92mm) | 4.059" (103.10mm) | 7.560" (192.02mm) | - | Boot, Transition - Breakout, 3:1 | |
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Black | - | 0.880" (22.35mm) | 1.420" (36.07mm) | - | Fluoroelastomer (FKM), Flexible | - | 0.330" (8.38mm) | 1.260" (32.00mm) | 0.819" (20.80mm) | 2.350" (59.69mm) | 2.350" (59.69mm) | Boot | |
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Black | - | 0.880" (22.35mm) | 1.420" (36.07mm) | - | Fluoroelastomer (FKM), Flexible | - | 0.330" (8.38mm) | 1.260" (32.00mm) | 0.701" (17.81mm) | 2.350" (59.69mm) | - | Boot | |
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Black | Drain Holes, Flame Retardant, Fluid Resistant, Fuel Resistant, Heat Resistant, Lip | 0.740" (18.80mm) | 1.161" (29.49mm) | 0.819" (20.80mm) | Fluoroelastomer (FKM), Flexible, Irradiated | 32 | 0.331" (8.41mm) | 1.161" (29.49mm) | 4.500" (114.30mm) | 5.760" (146.30mm) | - | Boot - 90° | |
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- | - | 0.618" (15.70mm) | 1.201" (30.51mm) | 1.252" (31.80mm) | Zerohal™ | - | 0.421" (10.69mm) | 0.787" (19.99mm) | 2.000" (50.80mm) | 3.252" (82.60mm) | - | Boot, Transition - Side Breakout, 30° | |
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Black | - | 1.620" (41.15mm) | 2.030" (51.56mm) | 1.160" (29.46mm) | Elastomer, Fluid Resistant | 74 | 0.590" (14.99mm) | 1.750" (44.45mm) | 6.820" (173.23mm) | 8.840" (224.54mm) | - | Boot - 90° | |
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- | - | - | - | - | - | - | - | - | - | - | - | - | |
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Black | - | 1.110" (28.19mm) | 1.681" (42.70mm) | 2.220" (56.39mm) | Fluoroelastomer (FKM), Flexible | 63 | 0.390" (9.91mm) | 0.870" (22.10mm) | - | 4.079" (103.61mm) | - | Boot | |
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Black | - | 1.110" (28.19mm) | 1.680" (42.67mm) | 2.220" (56.39mm) | Fluoroelastomer (FKM), Flexible | 63 | 0.390" (9.91mm) | 0.870" (22.10mm) | 0.970" (24.64mm) | 4.080" (103.63mm) | - | Boot | |
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Black | - | 1.110" (28.19mm) | 1.690" (42.93mm) | 1.770" (44.96mm) | Fluoroelastomer (FKM), Flexible | 63 | 0.390" (9.91mm) | 0.984" (24.99mm) | 1.180" (29.97mm) | 2.170" (55.12mm) | - | Boot - 90° | |
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Black | - | 0.790" (20.07mm) | 2.370" (60.20mm) | 3.460" (87.88mm) | Polyolefin (PO), Flexible | 13 | 0.790" (20.07mm) | 1.580" (40.13mm) | 3.460" (87.88mm) | 6.920" (175.77mm) | - | Boot, Transition - Breakout, 2:1 (T) | |
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Black | Flame Retardant, Fluid Resistant, Fuel Resistant, Heat Resistant, Lip | 0.740" (18.80mm) | 1.161" (29.49mm) | 0.480" (12.19mm) | Fluoroelastomer (FKM), Flexible, Irradiated | 32 | 0.331" (8.41mm) | 0.720" (18.29mm) | 2.480" (62.99mm) | 3.500" (88.90mm) | - | Boot | |
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Black | - | 0.790" (20.07mm) | 2.370" (60.20mm) | 3.460" (87.88mm) | VPB, Flexible | 13 | 0.790" (20.07mm) | 1.580" (40.13mm) | 1.540" (39.12mm) | - | - | Boot, Transition - Breakout, 2:1 (T) | |
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- | - | 0.449" (11.40mm) | 1.354" (34.39mm) | 1.618" (41.10mm) | EPB, Flexible | 12 | 0.201" (5.11mm), 0.449" (11.40mm) | 0.500" (12.70mm), 0.902" (22.91mm) | 1.618" (41.10mm) | 4.740" (120.40mm) | - | Boot, Transition - Breakout, 2:1 (T) | |
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Black | - | 1.051" (26.70mm) | 2.189" (55.60mm) | 4.272" (108.51mm) | Polyolefin (PO), Semi-Rigid | 67 | 0.512" (13.00mm) | 1.060" (26.92mm) | 3.642" (92.51mm) | - | - | Boot, Transition - Breakout, 4:1 | |
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Black | - | 1.051" (26.70mm) | 2.189" (55.60mm) | 4.272" (108.51mm) | Polyolefin (PO), Flexible | 67 | 0.512" (13.00mm) | 1.060" (26.92mm) | 3.642" (92.51mm) | - | - | Boot, Transition - Breakout, 4:1 |
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