"Wire harness tape" is a family, not a single product. Picking the wrong member of that family is the most common — and most expensive — sourcing mistake in harness manufacturing. Here is the map.
The five grades you'll actually be choosing between
- PET cloth tape — the workhorse. Strong abrasion resistance and good heat performance; the default for most under-hood routing.
- PET fleece (NVH) tape — soft, lofted, non-woven. Not for abrasion; its job is to cushion contact points and stop squeaks and rattles in the cabin.
- Acetate cloth tape — thin, easy-tear, good dielectric strength. Bundling and insulation in electronics and interior looms.
- Polyamide (nylon) cloth tape — the toughest option, for extreme friction and high-tensile demands (including aerospace/defence drawings).
- Hand-tearable grades — a property, not a separate family: available across the range so operators can wrap and tear without scissors.
Choose by zone, not by habit
Match the LV 312 temperature class to where the loom actually runs — T1 for the cabin, T2 for the engine-bay periphery, T3 for the engine-bay core, T4 against the engine or turbo. Then add the abrasion class (Class C or the tougher Class D) for anywhere the harness rubs.
Zone the harness to control cost
You rarely need the hottest, toughest grade over the whole loom. Use glass-cloth or T4 only where the harness passes the manifold, T3 PET through the bay, and a lighter hand-tearable grade once it reaches the cabin. That is how OEM programmes get warranty-proof harnesses without gold-plating every metre.
The one-line spec that gets an accurate quote
"PET cloth harness tape, LV 312 T3, abrasion Class C, hand-tearable, 19 mm, black — UL 510 if near ignition sources."
Browse automotive wire harness tape, fleece / NVH tape and PET abrasion-resistant tape.
FAQ
What tape is used for automotive wire harnesses?
Cloth wire harness tape — most often woven PET, with fleece for noise damping and acetate for light bundling and insulation. EJOY supplies the full range across LV 312 T1–T4.
How do I choose between PET cloth and fleece tape?
Choose woven PET where the harness rubs (abrasion, engine bay); choose soft PET fleece where you need to stop squeaks and rattles in the cabin. Many harnesses use both.