ATUM Medium-Wall Shrink Tube from TE Connectivity Raychem

The ATUM medium-wall shrink tube from TE Connectivity Raychem is a high-quality shrink tube with a high shrink ratio of 4:1. This shrink tube is coated with adhesive and made from polyolefin, providing a strong seal and protection for a wide range of electrical applications. The ATUM shrink tube is ideal for protecting cable connections from environmental factors such as moisture, dust, and chemicals, offering optimal protection against external influences.

Application of the ATUM Shrink Tube

The ATUM adhesive-lined shrink tube is perfect for sealing connectors at the back, connecting cables, and covering transitions between cables and connectors. Due to the 4:1 shrink ratio, this shrink tube is ideal for repairing damaged cable jackets without the need to remove the connectors. The adhesive in the dual-wall ATUM shrink tube adheres effectively to various materials, including polyethylene, aluminum, steel, and copper, ensuring a strong and reliable seal.

Features ATUM heat shrink tubing

  • Operating temperature range: -55°C to 110°C [-67°F to 230°F]
  • The minimum fully recovered temperature: 110°C [230°F]
  • Minimum shrink temperature: 80°C [176°F]
  • The dual-walled shrink tubing seals and protects components and connections in an environmentally friendly manner.
  • Mid-wall shrink tubing that provides enhanced mechanical protection.
  • 3:1 and 4:1 shrink ratios ensure connector-to-cable sealing.
  • RoHS compliant.

Product Dimensions of ATUM Shrink Tubing

Medium-walled shrink tubing with a 3:1 ratio – click through to view the products directly

Type Inner diameter before shrinkage Inner diameter after shrinkage Wall thickness after shrinkage Adhesive wall after shrinkage
ATUM-3/1 3.0 [0.118] 1.0 [0.039] 1.00 ± 0.28 [0.039 ± 0.010] 0.50 [0.020]
ATUM-4.5/1.5 4.5 [0.177] 1.5 [0.059] 1.10 ± 0.25 [0.043 ± 0.011] 0.50 [0.020]
ATUM-6/2 6.0 [0.236] 2.0 [0.079] 1.00 ± 0.28 [0.039 ± 0.010] 0.50 [0.020]
ATUM-9/3 9.0 [0.354] 3.0 [0.118] 1.40 ± 0.28 [0.055 ± 0.010] 0.61 [0.024]
ATUM-12/4 12.0 [0.472] 4.0 [0.157] 1.78 ± 0.38 [0.070 ± 0.015] 0.76 [0.030]
ATUM-19/6 19.0 [0.748] 6.0 [0.236] 2.25 ± 0.55 [0.088 ± 0.022] 0.76 [0.030]
ATUM-24/8 24.0 [0.940] 8.0 [0.315] 2.54 ± 0.55 [0.100 ± 0.022] 1.02 [0.040]
ATUM-40/13 40.0 [1.570] 13.0 [0.512] 2.54 ± 0.55 [0.100 ± 0.022] 1.02 [0.040]

Medium-wall shrink tubing 4:1 ratio – click through to directly view the products

Size Inner diameter before shrinkage Inner diameter after shrinkage Wall thickness after shrinkage Adhesive wall after shrinkage
ATUM-4/1 4.0 [0.157] 1.0 [0.039] 1.00 ± 0.28 [0.039 ± 0.010] 0.50 [0.020]
ATUM-8/2 8.0 [0.315] 2.0 [0.079] 1.00 ± 0.28 [0.039 ± 0.010] 0.50 [0.020]
ATUM-12/3 12.0 [0.472] 3.0 [0.118] 1.40 ± 0.28 [0.055 ± 0.010] 0.61 [0.024]
ATUM-16/4 16.0 [0.630] 4.0 [0.157] 1.78 ± 0.38 [0.070 ± 0.015] 0.76 [0.030]
ATUM-24/6 24.0 [0.945] 6.0 [0.236] 2.25 ± 0.55 [0.088 ± 0.022] 0.76 [0.030]
ATUM-32/8 32.0 [1.260] 8.0 [0.315] 2.54 ± 0.55 [0.100 ± 0.022] 1.02 [0.040]
ATUM-52/13 52.0 [2.050] 13.0 [0.512] 2.54 ± 0.55 [0.100 ± 0.022] 1.02 [0.040]

Order information Raychem ATUM

Standard colors: Black (-0)


Non-Standard colors: Transparent available only in 3:1 sizes (-X, not flame retardant); Other colors available upon request.


Size selection: Always order the largest size that will shrink tightly around the component to be covered. Special sizes are available upon request.


Packaging: Reels, small packaging, and standard lengths of 1200mm


Order description: Specify product name, size, and color (e.g., ATUM-8/2-0).

Certifications/Approvals Raychem ATUM

Series UL Military Raychem
ATUM E85381 AMS-DTL-23053/4, *Class 3 RW-2063 – Black
600 V, 110°C RK-6024 – Colors and transparent

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