ATUM 4/1 TUBING KIT 32 PCS

Description

Raychem ATUM 4:1 Tubing Kit — 32-Piece Adhesive-Lined Assortment

The ATUM-4-1-KIT is a 32-piece assortment of Raychem ATUM 4:1 adhesive-lined heat shrink tubing covering key diameter sizes from 5/32″ to 1 1/4″. The 4:1 shrink ratio makes ATUM the most versatile adhesive-lined heat shrink in the Raychem range, accommodating the largest possible pre-shrink to post-shrink diameter changes — essential at connector backshell entries, harness breakout points, and any application where the component diameter before shrinking significantly exceeds the finished harness diameter.

Raychem ATUM 4:1 — Why the High Shrink Ratio Matters

Standard 2:1 heat shrink tubing must be no more than double the finished diameter before shrinking. At a connector backshell entry where the connector shell diameter is much larger than the exiting cable bundle, a 2:1 tube cannot be slid over the connector shell at all. ATUM’s 4:1 ratio allows the tube to be installed over the large connector shell, then shrunk down to seal around the much smaller cable bundle exiting from it — a diameter accommodation that no standard 2:1 or even 3:1 product can match. This makes ATUM uniquely suited to connector backshell applications in professional motorsport harness builds.

Kit Contents

The 32-piece kit provides 6-inch lengths in six diameters (5/32″ through 1 1/4″), giving a workshop immediate coverage of the most common ATUM application sizes for connector backshell sealing and harness bundle end-sealing across the full range of motorsport connector shell sizes.

Available from Arctic Performance Parts

Arctic Performance Parts stocks Raychem ATUM 4:1 in the complete kit, individual 6-inch piece packs, and full stick lengths. ATUM 3:1 is also available. Supporting professional motorsport harness builders across Scandinavia. Lead time 1–2 weeks for quantities beyond current stock.