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 | Abrasion Resistant, Adhesive Coating, Chemical Resistant, Flame Retardant, Fluid Resistant, Heat Resistant, Strain Resistant | 1.189" (30.20mm) | 2.189" (55.60mm) | 4.850" (123.19mm) | Elastomer, Semi-Rigid, 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 | Abrasion Resistant, Adhesive Coating, Chemical Resistant, Flame Retardant, Fluid Resistant, Heat Resistant, Lip, Strain Resist | 1.343" (34.11mm) | 1.717" (43.61mm) | 0.839" (21.31mm) | Elastomer, Semi-Rigid, Irradiated | 63 | 0.142" (3.61mm) | 0.449" (11.40mm) | 1.850" (46.99mm) | 4.551" (115.60mm) | Boot - 90° | |
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Black | Abrasion Resistant, Adhesive Coating, Chemical Resistant, Flame Retardant, Fluid Resistant, Heat Resistant, Lip, Strain Resist | 2.642" (67.11mm) | 3.220" (81.79mm) | 1.228" (31.19mm) | Elastomer, Semi-Rigid, Irradiated | 99 | 0.902" (22.91mm) | 3.220" (81.79mm) | 5.449" (138.40mm) | 8.000" (203.20mm) | Boot | |
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Black | Adhesive Coating, Fluid Resistant | 0.370" (9.40mm) | 0.811" (20.60mm) | - | Elastomer, Semi-Rigid | 52 | - | - | - | 2.402" (61.01mm) | Cap | |
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Black | Adhesive Coating, Fluid Resistant | 2.311" (58.70mm) | 1.350" (34.29mm) | 1.118" (28.40mm) | Elastomer, Semi-Rigid | 42 | 0.339" (8.61mm) | 1.350" (34.29mm) | - | 2.098" (53.29mm) | Boot, Rectangular | |
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Black | Abrasion Resistant, Adhesive Coating, Chemical Resistant, Flame Retardant, Fluid Resistant, Heat Resistant, Lip, Strain Resist | 1.850" (46.99mm) | 2.469" (62.71mm) | 0.921" (23.39mm) | Elastomer, Semi-Rigid, Irradiated | 85 | 0.690" (17.53mm) | 2.469" (62.71mm) | 6.031" (153.19mm) | 8.000" (203.20mm) | Boot | |
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Black | Abrasion Resistant, Adhesive Coating, Chemical Resistant, Flame Retardant, Fluid Resistant, Heat Resistant, Lip, Strain Resist | 1.622" (41.20mm) | 1.970" (50.04mm) | 0.819" (20.80mm) | Elastomer, Semi-Rigid, Irradiated | 74 | 0.559" (14.20mm) | 1.970" (50.04mm) | 6.209" (157.71mm) | 8.000" (203.20mm) | Boot | |
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Black | Adhesive Coating, Fluid Resistant | 0.787" (19.99mm) | - | - | Elastomer, Semi-Rigid | 23 | 0.270" (6.86mm) | 0.710" (18.03mm) | 0.768" (19.51mm) | 2.835" (72.01mm) | Feed Through | |
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Black | Abrasion Resistant, Chemical Resistant, Flame Retardant, Fluid Resistant, Heat Resistant, Lip, Strain Resistant | 2.642" (67.11mm) | 3.220" (81.79mm) | 1.228" (31.19mm) | Elastomer, Semi-Rigid, Irradiated | 99 | 0.902" (22.91mm) | 3.220" (81.79mm) | 5.449" (138.40mm) | 8.000" (203.20mm) | Boot | |
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Black | - | 0.800" (20.32mm) | 1.300" (33.02mm) | 1.201" (30.51mm) | Elastomer, Semi-Rigid | 34 | 0.430" (10.92mm) | 1.300" (33.02mm) | - | 6.000" (152.40mm) | Boot | |
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Black | Adhesive Coating, Fluid Resistant | 2.280" (57.91mm) | 1.480" (37.59mm) | 1.252" (31.80mm) | Elastomer, Semi-Rigid | 52 | 0.421" (10.69mm) | 1.480" (37.59mm) | - | 2.402" (61.01mm) | Boot, Rectangular | |
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Black | Abrasion Resistant, Adhesive Coating, Chemical Resistant, Flame Retardant, Fluid Resistant, Heat Resistant, Lip, Strain Resist | 1.340" (34.04mm) | 1.720" (43.69mm) | 0.780" (19.81mm) | Elastomer, Semi-Rigid, Irradiated | 63 | 0.480" (12.19mm) | 1.720" (43.69mm) | 6.421" (163.09mm) | 8.000" (203.20mm) | Boot | |
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Black | Adhesive Coating, Fluid Resistant | 0.710" (18.03mm) | 1.551" (39.40mm) | - | Elastomer, Semi-Rigid | 73 | - | - | - | 3.598" (91.39mm) | Cap | |
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Black | Abrasion Resistant, Chemical Resistant, Flame Retardant, Fluid Resistant, Heat Resistant, Lip, Strain Resistant | 1.850" (46.99mm) | 2.469" (62.71mm) | 1.311" (33.30mm) | Elastomer, Semi-Rigid, Irradiated | 85 | 0.690" (17.53mm) | 2.469" (62.71mm) | 6.618" (168.10mm) | 8.949" (227.30mm) | Boot - 90° | |
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Black | Adhesive Coating, Fluid Resistant | 0.252" (6.40mm) | 0.598" (15.19mm) | - | Elastomer, Semi-Rigid | 41 | - | - | - | 1.600" (40.64mm) | Cap | |
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Black | Adhesive Coating, Fluid Resistant | 0.181" (4.60mm) | 0.402" (10.21mm) | - | Elastomer, Semi-Rigid | 31 | - | - | - | 1.201" (30.51mm) | Cap | |
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Black | - | 0.800" (20.32mm) | 0.800" (20.32mm) | 0.728" (18.49mm) | Polyolefin (PO), Semi-Flexible | 11 | 0.161" (4.09mm) | 0.311" (7.90mm) | - | - | Boot - 90° | |
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Black | Flame Retardant, Fluid Resistant, Lip, Mechanical Resistant | 0.591" (15.00mm) | 1.012" (25.70mm) | 0.780" (19.81mm) | Polyolefin (PO), Semi-Flexible, Halogen Free, Irradiated | 21 | 0.291" (7.39mm) | 0.630" (16.00mm) | 3.902" (99.11mm) | 4.880" (123.95mm) | Boot - 90° | |
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Black | Flame Retardant, Fluid Resistant, Lip, Mechanical Resistant | 1.622" (41.20mm) | 1.970" (50.04mm) | 0.819" (20.80mm) | Polyolefin (PO), Semi-Flexible, Halogen Free, Irradiated | 74 | 0.559" (14.20mm) | 1.240" (31.50mm) | 6.209" (157.71mm) | 8.000" (203.20mm) | Boot | |
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Black | - | 2.311" (58.70mm) | 2.360" (59.94mm) | 1.118" (28.40mm) | Polyolefin (PO), Semi-Flexible | 42 | 0.339" (8.61mm) | 0.681" (17.30mm) | - | 2.098" (53.29mm) | Boot, Rectangular | |
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Black | Flame Retardant, Fluid Resistant, Lip, Mechanical Resistant | 0.449" (11.40mm) | 0.882" (22.40mm) | 0.728" (18.49mm) | Polyolefin (PO), Semi-Flexible, Halogen Free, Irradiated | 11 | 0.252" (6.40mm) | 0.551" (14.00mm) | 3.449" (87.60mm) | 4.142" (105.21mm) | Boot - 90° | |
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Black | - | 0.787" (19.99mm) | - | - | Polyolefin (PO), Semi-Flexible | 23 | 0.270" (6.86mm) | 0.710" (18.03mm) | 0.768" (19.51mm) | 2.835" (72.01mm) | Feed Through | |
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Black | - | 2.311" (58.70mm) | 2.360" (59.94mm) | 1.118" (28.40mm) | Polyolefin (PO), Semi-Flexible | 42 | 0.339" (8.61mm) | 0.681" (17.30mm) | - | 2.098" (53.29mm) | Boot, Rectangular | |
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Black | - | 1.220" (30.99mm) | - | - | Polyolefin (PO), Semi-Flexible | 34 | 0.472" (11.99mm) | 1.102" (27.99mm) | 1.060" (26.92mm) | 3.420" (86.87mm) | Feed Through | |
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Black | Adhesive Coating, Flame Retardant, Fluid Resistant, Lip, Mechanical Resistant, Strain Resistant | 1.618" (41.10mm) | 1.970" (50.04mm) | 1.161" (29.49mm) | Polyolefin (PO), Semi-Flexible, Halogen Free, Irradiated | 74 | 0.559" (14.20mm) | 1.240" (31.50mm) | 6.819" (173.20mm) | 8.839" (224.51mm) | Boot - 90° | |
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Black | - | 1.000" (25.40mm) | 2.189" (55.60mm) | 3.760" (95.50mm) | Polyolefin (PO), Semi-Flexible | 38 | 0.488" (12.40mm) | 1.060" (26.92mm) | 3.402" (86.41mm) | 7.209" (183.11mm) | Boot, Transition - Side Breakout, 45° | |
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Black | - | 2.311" (58.70mm) | 2.311" (58.70mm) | 0.791" (20.10mm) | Polyolefin (PO), Semi-Flexible | 42 | 0.311" (7.90mm) | 0.681" (17.30mm) | - | - | Boot - 90° | |
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Black | - | 0.681" (17.30mm) | 1.280" (32.51mm) | 1.201" (30.51mm) | Polyolefin (PO), Semi-Flexible | 42 | 0.272" (6.91mm) | 0.902" (22.91mm) | 0.980" (24.89mm) | - | Boot - 90° | |
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Black | - | 0.720" (18.29mm) | 1.402" (35.61mm) | 0.752" (19.10mm) | Polyolefin (PO), Semi-Flexible | 24 | 0.339" (8.61mm) | 0.598" (15.19mm) | 1.618" (41.10mm) | 2.500" (63.50mm) | Boot, Transition - Side Breakout, 30° | |
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Black | - | 0.488" (12.40mm) | 1.060" (26.92mm) | 1.642" (41.71mm) | Polyolefin (PO), Semi-Flexible | 23 | 0.118" (3.00mm) | 0.260" (6.60mm) | 1.071" (27.20mm) | 3.280" (83.31mm) | Boot, Transition - Breakout, 2:1 (T) | |
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Black | - | 2.252" (57.20mm) | 3.402" (86.41mm) | 4.450" (113.03mm) | Polyolefin (PO), Semi-Flexible, Halogen Free | 96 | 1.060" (26.92mm) | 2.811" (71.40mm) | 3.150" (80.01mm) | 8.370" (212.60mm) | Boot | |
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Black | - | 1.390" (35.31mm) | 1.902" (48.31mm) | 2.551" (64.80mm) | Polyolefin (PO), Semi-Flexible, Halogen Free | 74 | 0.630" (16.00mm) | 1.902" (48.31mm) | 2.000" (50.80mm) | 5.130" (130.30mm) | Boot | |
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Black | - | 0.252" (6.40mm) | 0.598" (15.19mm) | - | Polyolefin (PO), Semi-Flexible | 41 | - | - | - | 1.600" (40.64mm) | Cap | |
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Black | - | 1.060" (26.92mm) | 2.189" (55.60mm) | 3.760" (95.50mm) | Polyolefin (PO), Semi-Flexible | 58 | 0.539" (13.69mm) | 1.060" (26.92mm) | 3.660" (92.96mm) | 8.012" (203.50mm) | Boot, Transition - Side Breakout, 45° | |
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Black | - | 1.450" (36.83mm) | 2.390" (60.71mm) | 2.000" (50.80mm) | Polyolefin (PO), Flexible | 55 | 0.350" (8.89mm) | 0.800" (20.32mm) | - | 5.400" (137.16mm) | Boot, Transition - Breakout, 4:1 | |
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Black | - | 0.450" (11.43mm) | 2.390" (60.71mm) | - | Polyolefin (PO), Semi-Rigid | 55 | 0.350" (8.89mm) | 0.800" (20.32mm) | 2.000" (50.80mm) | 5.400" (137.16mm) | Boot, Transition - Breakout, 4:1 | |
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- | - | - | - | - | - | - | - | - | - | - | Boot | |
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Black | Flame Retardant, Fluid Resistant, Heat Resistant, Lip | - | - | - | Polyolefin (PO), Flexible, Irradiated | 53 | - | - | - | - | Boot | |
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- | - | 1.091" (27.71mm) | 1.268" (32.21mm) | - | Polyolefin (PO), Semi-Rigid | - | 0.181" (4.60mm) | 0.370" (9.40mm) | 1.402" (35.61mm) | 4.047" (102.79mm) | Boot, Transition - Breakout, 8:1 | |
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- | - | 1.091" (27.71mm) | 1.268" (32.21mm) | - | Polyolefin (PO), Flexible | - | 0.181" (4.60mm) | 0.370" (9.40mm) | 1.402" (35.61mm) | 4.047" (102.79mm) | Boot, Transition - Breakout, 8:1 | |
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Black | - | 1.051" (26.70mm) | 2.189" (55.60mm) | 4.272" (108.51mm) | Fluoroelastomer (FKM), Flexible | 67 | 0.512" (13.00mm) | 1.060" (26.92mm) | 3.642" (92.51mm) | - | Boot, Transition - Breakout, 4:1 | |
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- | - | - | - | - | - | - | - | - | - | - | Boot - 90° | |
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Black | Flame Retardant | 1.400" (35.56mm) | 2.760" (70.10mm) | 2.000" (50.80mm) | Polyolefin (PO), Semi-Rigid | 55 | 0.500" (12.70mm) | 1.160" (29.46mm) | 1.500" (38.10mm) | 5.000" (127.00mm) | Boot, Transition - Breakout, 3:1 | |
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Black | Lip | - | - | - | Polyolefin (PO) | - | - | - | - | - | Boot - 90° | |
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Black | Flame Retardant, Fluid Resistant, Fuel Resistant, Heat Resistant, Lip | 1.850" (46.99mm) | 2.469" (62.71mm) | 1.311" (33.30mm) | Fluoroelastomer (FKM), Flexible, Irradiated | 85 | 0.690" (17.53mm) | 1.539" (39.09mm) | 6.618" (168.10mm) | 8.949" (227.30mm) | Boot - 90° | |
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Black | Lip | 0.700" (17.78mm) | 1.220" (30.99mm) | 1.590" (40.39mm) | Polyolefin (PO) | - | 0.280" (7.11mm) | 1.220" (30.99mm) | 0.700" (17.78mm) | 2.630" (66.80mm) | Boot | |
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Black | Lip | 0.410" (10.41mm) | 0.920" (23.37mm) | 0.890" (22.61mm) | Polyolefin (PO) | - | 0.220" (5.59mm) | 0.920" (23.37mm) | 0.230" (5.84mm) | 0.840" (21.34mm) | Boot - 90° | |
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