Raychem ATUM 4:1 5/16″ Adhesive-Lined Heat Shrink — 8 × 6-Inch Pre-Cut Pieces
The 6IN-ATUM-8/2 is Raychem ATUM 4:1 adhesive-lined cross-linked polyolefin heat shrink tubing in 5/16″ expanded inner diameter (approximately 8.0 mm mm expanded, recovering to approximately 2.0 mm mm), supplied as 8 × 6-inch pre-cut pieces. ATUM 4:1 is suited to medium individual wires and small connector cable entry sealing where the 4:1 ratio accommodates irregular connector body geometries.
Raychem ATUM 4:1 — High Shrink Ratio Adhesive-Lined Construction
Raychem ATUM uses a cross-linked polyolefin outer wall with an inner hot-melt adhesive lining. The 4:1 shrink ratio provides the greatest diameter accommodation of any standard heat shrink product — a tube installed over a large connector shell shrinks down to seal firmly against the much smaller cable bundle exiting from the connector, a diameter change no standard 2:1 product can accommodate. The adhesive inner lining melts and flows into gaps during shrinking, creating a watertight seal on uneven surfaces.
5/16″ Diameter — Application
The 5/16″ ATUM suits medium individual wires and small connector cable entry sealing where the 4:1 ratio accommodates irregular connector body geometries.
Available from Arctic Performance Parts
Arctic Performance Parts stocks Raychem ATUM in 4:1 and 3:1 shrink ratios across all key diameters, in 6-inch piece packs and full stick lengths. Supporting professional motorsport harness builders across Scandinavia. Lead time 1–2 weeks for quantities beyond current stock.
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