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 | Type | |||
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Black | - | 0.681" (17.30mm) | 1.280" (32.51mm) | 1.201" (30.51mm) | Fluoroelastomer (FKM), Flexible | 42 | 0.272" (6.91mm) | 0.902" (22.91mm) | 0.980" (24.89mm) | - | Boot - 90° | |
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Black | Adhesive Coating, Fluid Resistant | 1.000" (25.40mm) | 2.189" (55.60mm) | 3.559" (90.40mm) | Elastomer, Semi-Rigid | 48 | 0.230" (5.84mm) | 0.520" (13.21mm) | 2.260" (57.40mm) | 7.110" (180.59mm) | Boot, Transition - Breakout, 2:1 (T) | |
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- | - | 0.949" (24.11mm) | 1.500" (38.10mm) | 1.980" (50.29mm) | Elastomer | 23 | 0.488" (12.40mm) | 1.500" (38.10mm) | 0.417" (10.59mm) | 2.000" (50.80mm) | Boot - 90° | |
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- | - | 0.949" (24.11mm) | 1.500" (38.10mm) | 1.980" (50.29mm) | Polyolefin (PO), Semi-Rigid | 23 | 0.488" (12.40mm) | 1.500" (38.10mm) | 0.417" (10.59mm) | 2.000" (50.80mm) | Boot - 90° | |
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Black | - | 0.730" (18.54mm) | 1.220" (30.99mm) | 0.480" (12.19mm) | Elastomer, Fluid Resistant | 32 | 0.350" (8.89mm) | 0.960" (24.38mm) | 2.480" (62.99mm) | 3.500" (88.90mm) | Boot | |
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Black | Flame Retardant, Fluid Resistant, Fuel Resistant, Heat Resistant, Lip | 0.591" (15.00mm) | 1.012" (25.70mm) | 0.780" (19.81mm) | Fluoroelastomer (FKM), Flexible, Irradiated | 21 | 0.291" (7.39mm) | 0.630" (16.00mm) | 2.118" (53.80mm) | 3.098" (78.69mm) | Boot - 90° | |
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Black | Flame Retardant, Fluid Resistant, Fuel Resistant, Heat Resistant, Lip, Potting (Injection) Port, Vent Port | 0.591" (15.00mm) | 1.012" (25.70mm) | 0.780" (19.81mm) | Fluoroelastomer (FKM), Flexible, Irradiated | 21 | 0.291" (7.39mm) | 0.630" (16.00mm) | 2.118" (53.80mm) | 3.098" (78.69mm) | Boot - 90° | |
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Black | - | 0.740" (18.80mm) | 1.520" (38.61mm) | 2.421" (61.49mm) | Polyolefin (PO), Flexible | 34 | 0.382" (9.70mm) | 0.760" (19.30mm) | 2.902" (73.71mm) | 5.319" (135.10mm) | Boot, Transition - Breakout, 3:1 | |
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Black | - | 0.740" (18.80mm) | 1.520" (38.61mm) | 2.421" (61.49mm) | Polyolefin (PO), Flexible | 34 | 0.382" (9.70mm) | 0.760" (19.30mm) | 2.902" (73.71mm) | 5.319" (135.10mm) | Boot, Transition - Breakout, 3:1 | |
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Black | - | 0.740" (18.80mm) | 1.520" (38.61mm) | 2.421" (61.49mm) | Polyolefin (PO), Semi-Rigid | 34 | 0.382" (9.70mm) | 0.760" (19.30mm) | 2.902" (73.71mm) | 5.319" (135.10mm) | Boot, Transition - Breakout, 3:1 | |
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- | - | 0.600" (15.24mm) | 1.200" (30.48mm) | 1.620" (41.15mm) | Polyolefin (PO), Flexible | - | 0.400" (10.16mm) | 0.800" (20.32mm) | 1.500" (38.10mm) | - | Boot, Transition - Side Breakout, 90° | |
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- | - | 0.602" (15.29mm) | 1.197" (30.40mm) | 1.618" (41.10mm) | Polyolefin (PO), Flexible | - | 0.402" (10.21mm) | 0.799" (20.30mm) | 1.500" (38.10mm) | 3.252" (82.60mm) | Boot, Transition - Side Breakout, 90° | |
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Black | Flame Retardant, Fluid Resistant, Heat Resistant, Lip | 0.902" (22.91mm) | 1.340" (34.04mm) | 0.858" (21.79mm) | Polyolefin (PO), Flexible, Irradiated | 42 | 0.382" (9.70mm) | 1.340" (34.04mm) | 5.220" (132.59mm) | 5.220" (132.59mm) | Boot - 90° | |
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Black | - | 0.600" (15.24mm) | 1.200" (30.48mm) | - | Polyolefin (PO), Flexible | 14 | 0.250" (6.35mm) | 0.500" (12.70mm) | - | - | Boot, Transition - Side Breakout, 30° | |
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Black | - | 0.610" (15.49mm) | 0.850" (21.59mm) | 0.770" (19.56mm) | Polyolefin (PO), Semi-Rigid | 23 | 0.200" (5.08mm) | 0.850" (21.59mm) | - | - | Boot | |
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Black | - | 0.420" (10.67mm) | 0.820" (20.83mm) | 1.620" (41.15mm) | Elastomer, Fluid Resistant | 36 | 0.210" (5.33mm) | 0.810" (20.57mm) | 0.650" (16.51mm) | 2.500" (63.50mm) | Boot | |
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Black | - | 0.420" (10.67mm) | 0.820" (20.83mm) | 1.620" (41.15mm) | Elastomer, Fluid Resistant | 36 | 0.210" (5.33mm) | 0.810" (20.57mm) | 0.650" (16.51mm) | 2.500" (63.50mm) | Boot | |
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Black | - | 0.512" (13.00mm) | 1.060" (26.92mm) | 2.039" (51.79mm) | Polyolefin (PO), Semi-Rigid | 43 | 0.272" (6.91mm) | 0.520" (13.21mm) | 1.770" (44.96mm) | - | Boot, Transition - Breakout, 4:1 | |
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Black | - | 0.512" (13.00mm) | 1.060" (26.92mm) | 2.039" (51.79mm) | Polyolefin (PO), Semi-Flexible | 43 | 0.272" (6.91mm) | 0.520" (13.21mm) | 1.770" (44.96mm) | - | Boot, Transition - Breakout, 4:1 | |
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Black | - | 0.370" (9.40mm) | 0.750" (19.05mm) | 1.750" (44.45mm) | Elastomer, Fluid Resistant | 18 | 0.370" (9.40mm) | 0.750" (19.05mm) | 1.750" (44.45mm) | - | Boot - 90° | |
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Black | - | 0.740" (18.80mm) | 1.520" (38.61mm) | 2.421" (61.49mm) | Polyolefin (PO), Semi-Flexible | 34 | 0.382" (9.70mm) | 0.760" (19.30mm) | 2.902" (73.71mm) | 5.319" (135.10mm) | Boot, Transition - Breakout, 3:1 | |
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Black | - | 0.551" (14.00mm) | 0.710" (18.03mm) | 0.984" (24.99mm) | Polyolefin (PO), Semi-Rigid | 12 | 0.130" (3.30mm) | 0.320" (8.13mm) | 0.591" (15.01mm) | 1.291" (32.79mm) | Boot - 90° | |
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Black | Adhesive Coating, Fluid Resistant | 0.551" (14.00mm) | 0.710" (18.03mm) | 0.984" (24.99mm) | Elastomer, Semi-Rigid | 12 | 0.130" (3.30mm) | 0.320" (8.13mm) | 0.591" (15.01mm) | 1.291" (32.79mm) | Boot - 90° | |
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Black | - | 1.690" (42.93mm) | 2.470" (62.74mm) | 1.310" (33.27mm) | Elastomer, Fluid Resistant | 85 | 0.690" (17.53mm) | 1.860" (47.24mm) | 6.620" (168.15mm) | 8.950" (227.33mm) | Boot - 90° | |
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Black | - | 1.382" (35.10mm) | 2.050" (52.07mm) | 2.130" (54.10mm) | Zerohal™ | 74 | 0.618" (15.70mm) | 1.540" (39.12mm) | 1.260" (32.00mm) | 3.150" (80.01mm) | Boot - 90° | |
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Black | - | 0.800" (20.32mm) | 1.300" (33.02mm) | 1.200" (30.48mm) | Polyolefin (PO), Semi-Flexible, Halogen Free | 34 | 0.430" (10.92mm) | 1.300" (33.02mm) | - | 6.000" (152.40mm) | Boot | |
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Black | - | 0.618" (15.70mm) | 0.882" (22.40mm) | 0.618" (15.70mm) | Fluoroelastomer (FKM), Flexible | - | 0.618" (15.70mm) | 0.480" (12.19mm) | - | 5.000" (127.00mm) | Boot | |
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- | - | 0.949" (24.11mm) | 1.500" (38.10mm) | 1.000" (25.40mm) | Elastomer | - | 0.488" (12.40mm) | 1.500" (38.10mm) | 1.752" (44.50mm) | - | Boot - 45° | |
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Black | - | 0.421" (10.69mm) | 0.500" (12.70mm) | 1.618" (41.10mm) | NBCCS, Flexible | 34 | 0.110" (2.79mm) | 0.441" (11.20mm) | 0.618" (15.70mm) | 2.500" (63.50mm) | Boot | |
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Black | - | 0.790" (20.07mm) | 2.370" (60.20mm) | 2.480" (62.99mm) | EPB, Flexible | 3 | 0.790" (20.07mm) | 1.579" (40.11mm) | 2.480" (62.99mm) | - | Boot, Transition - Breakout, 2:1 (Y) | |
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Black | - | 0.790" (20.07mm) | 2.370" (60.20mm) | 2.480" (62.99mm) | EPB, Flexible | 3 | 0.790" (20.07mm) | 1.579" (40.11mm) | 2.480" (62.99mm) | - | Boot, Transition - Breakout, 2:1 (Y) | |
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- | - | 0.705" (17.90mm) | 1.220" (30.99mm) | 1.378" (35.00mm) | Fluoroelastomer (FKM), Flexible | - | 0.276" (7.01mm) | 0.709" (18.01mm) | 2.165" (54.99mm) | - | Boot - 45° | |
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Black | - | 1.620" (41.15mm) | 2.500" (63.50mm) | 2.210" (56.13mm) | Polyolefin (PO), Flexible | 74 | 0.590" (14.99mm) | 1.790" (45.47mm) | 0.600" (15.24mm) | 4.000" (101.60mm) | Boot | |
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Black | - | 0.710" (18.03mm) | 1.520" (38.61mm) | 2.580" (65.53mm) | Polyolefin (PO), Semi-Flexible, Halogen Free | 34 | 0.490" (12.45mm) | 1.060" (26.92mm) | 3.100" (78.74mm) | - | Boot, Transition - Breakout, 2:1 (Y) | |
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Black | - | 2.280" (57.91mm) | 2.320" (58.93mm) | 1.252" (31.80mm) | Fluoroelastomer (FKM), Flexible | 52 | 0.421" (10.69mm) | 0.752" (19.10mm) | - | 2.402" (61.01mm) | Boot, Rectangular | |
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Black | - | 0.250" (6.35mm) | 1.020" (25.91mm) | 2.130" (54.10mm) | Fluoroelastomer (FKM), Flexible | 4 | 0.220" (5.59mm) | 0.630" (16.00mm) | 0.430" (10.92mm) | 3.540" (89.92mm) | Boot, Transition - Breakout, 2:1 (T) | |
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Black | - | 1.530" (38.86mm) | 1.530" (38.86mm) | 5.600" (142.24mm) | VPB, Flexible | 53 | 0.430" (10.92mm) | 1.240" (31.50mm) | 0.550" (13.97mm) | 7.000" (177.80mm) | Boot | |
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Black | - | 1.530" (38.86mm) | 1.530" (38.86mm) | 5.600" (142.24mm) | VPB, Flexible | 53 | 0.430" (10.92mm) | 1.240" (31.50mm) | 0.550" (13.97mm) | 7.000" (177.80mm) | Boot | |
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Black | - | 0.559" (14.20mm) | 1.180" (29.97mm) | 1.060" (26.92mm) | Fluoroelastomer (FKM), Flexible | 32 | 0.232" (5.89mm) | 0.591" (15.01mm) | 0.790" (20.07mm) | 1.260" (32.00mm) | Boot - 90° | |
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Black | - | 0.380" (9.65mm) | 0.760" (19.30mm) | 1.420" (36.07mm) | Polyolefin (PO), Semi-Flexible, Halogen Free | 32 | 0.270" (6.86mm) | 0.520" (13.21mm) | 1.770" (44.96mm) | - | Boot, Transition - Breakout, 4:1 | |
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Black | - | 1.000" (25.40mm) | 2.189" (55.60mm) | 4.382" (111.30mm) | Polyolefin (PO), Flexible | 58 | 0.488" (12.40mm) | 1.060" (26.92mm) | 3.059" (77.70mm) | 8.752" (222.30mm) | Boot, Transition - Breakout, 2:1 (T) | |
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Black | Adhesive Coating | 0.449" (11.40mm) | 1.350" (34.29mm) | 2.480" (62.99mm) | EPB, Flexible | 2 | 0.449" (11.40mm) | 0.902" (22.91mm) | 2.480" (62.99mm) | - | Boot, Transition - Breakout, 2:1 (Y) | |
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Black | - | 0.260" (6.60mm) | 0.780" (19.81mm) | 1.690" (42.93mm) | Polyolefin (PO), Flexible | 21 | 0.260" (6.60mm) | 0.520" (13.21mm) | 1.690" (42.93mm) | 3.380" (85.85mm) | Boot, Transition - Breakout, 3:1 | |
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Black | Adhesive Coating, Lip | 1.752" (44.50mm) | 2.600" (66.04mm) | 3.540" (89.92mm) | Polyolefin (PO), Semi-Flexible, Halogen Free | 85 | 0.661" (16.79mm) | 1.654" (42.01mm) | 2.760" (70.10mm) | 6.690" (169.93mm) | Boot | |
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Black | Adhesive Coating, Flame Retardant | 0.690" (17.53mm) | 1.250" (31.75mm) | 1.480" (37.59mm) | Polyolefin (PO), Flexible | 23 | 0.180" (4.57mm) | 0.550" (13.97mm) | 0.800" (20.32mm) | 3.500" (88.90mm) | Boot, Transition - Breakout, 3:1 | |
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- | - | - | - | - | - | - | - | - | - | - | Boot |
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