Roundit 2000

Federal-Mogul Roundit 2000 — Self-Wrapping Split Cable Sleeving

Roundit 2000 is a Federal-Mogul self-wrapping split cable sleeving made from polyester (PET) mono and multifilament. The longitudinal split allows the sleeve to be opened along its full length — wires, hoses, and connectors are inserted from the side and the sleeve closes under its own spring tension without adhesive or clamps. Operating temperature range is −65°C to +125°C.

Roundit 2000 is a cost-effective alternative to DR-25 closed braid sleeving for cockpit and interior runs: lighter, easier to retrofit onto existing looms, and serviceable without cutting the sleeve. Where DR-25 requires threading wires from an open end, Roundit 2000 wraps directly onto a bundle with crimped connectors in place.

Fluid resistance covers brake fluid, hydraulic fluid, lube oil, and fuel — making it suitable for motorsport harness runs near fluid circuits without additional protective overwrap.

Roundit 2000 vs Other Sleeving Types

Property	Roundit 2000	Braided expandable sleeving	Corrugated split loom
Installation method	Side entry — no re-threading	Thread-through (or split variant)	Side entry via split
Holds shape on bundle	Yes — wraps under tension	No — expands with bundle	No — clips over bundle
Abrasion resistance	Good — polyester multifilament	High — PET braid weave	Moderate — PP corrugated wall
Flexibility	High — conforms to bends	High	Moderate
Temperature	−65°C to +125°C	−65°C to +150°C	−40°C to +105°C
Fluid resistance	Brake fluid, hydraulic fluid, fuel, lube oil	Good	Limited
Appearance	Smooth woven finish	Braided mesh texture	Ribbed corrugated
Motorsport use	Cockpit and interior looms	Engine bay exposed runs	Underbody protection

Size Selection Guide

Size	Bundle diameter range	Typical motorsport use
5 mm	1–5 mm	2–4 wires 22–24 AWG; sensor runs, individual circuits
8 mm	3–8 mm	Small sub-looms; paddle shift, dash lighting, switch inputs
13 mm	6–13 mm	Medium sub-looms; sensor clusters, firewall feedthroughs
19 mm	10–19 mm	Main harness trunk; cockpit-to-engine bay transition
25 mm	14–25 mm	Large main looms; central harness trunk

For a clean finish with full closure, the bundle OD should fall within the listed range. Oversized bundles will not close fully; undersized bundles may leave a visible gap along the split.

Ordering

Roundit 2000 is sold per metre as a continuous cut length, hand-wound loose.

FAQ

What is Roundit 2000 used for in motorsport wiring?

Roundit 2000 is used as the outer sleeving on cockpit and cabin wire harnesses where a clean, professional finish is required and the harness must remain serviceable. It is common on club sport builds, Group N cockpit looms, and any harness section that needs to be accessible without cutting or re-threading.

Is Roundit 2000 a DR-25 alternative?

Roundit 2000 is a lightweight, cost-effective alternative to DR-25 for cockpit and interior harness runs. DR-25 is a closed braided sleeving that requires threading wires from an open end. Roundit 2000 wraps directly onto a bundle with connectors already attached, making it significantly faster to install and retrofit. For high-heat engine bay runs where DR-25 is chosen for its temperature rating, Roundit 2000 polyester is not a direct substitute.

Can Roundit 2000 be used in the engine bay?

Roundit 2000 polyester is rated to +125°C and is suitable for engine bay locations away from the exhaust. For runs near exhaust manifolds or turbochargers, braided sleeving with higher temperature ratings or PTFE-lined solutions are more appropriate.

How does Roundit 2000 close after installation?

The sleeve closes under its own spring tension — no adhesive or clamps are required. On straight runs the sleeve stays closed with light manual pressure during installation. On bends and junctions, small tie wraps or heat shrink at intervals keep the sleeve from opening.

Is Roundit 2000 the same as corrugated split loom?

No. Corrugated split loom clips over the bundle at the split line and relies on the corrugated walls for structure. Roundit 2000 wraps fully around the bundle under tension, giving a smoother finish and better abrasion resistance, but less crush protection than corrugated loom. For underbody stone-impact protection, corrugated loom is preferred.