Dual Wall Adhesive Lined Heat Shrink Tubing
The Radiform RDW dual-wall adhesive-lined heat shrink tubing. Engineered specifically to deliver an absolute, moisture-proof barrier at critical terminal joins, this high-performance tubing provides the electrical safety, environmental defence, and long-term circuit reliability required for high-risk applications. At Red2Go, we stock an extensive online inventory of professional-grade insulation consumables to streamline your workshop or in the field. Red2go components are built to last, the flame retarded and self extinguishing heat shrink is resistant to chemicals, copper corrosion, fungus, and UV exposure. The RDW operating temperature range is -55°C to +85°C, it is RoHS compliant, and UL Listed, (File E523862). Browse our full online range of Radiform RDW heat shrink today, and enjoy fast, reliable delivery across Australia.
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Advanced Dual-Wall Engineering and Hermetic Co-Moulding
Standard single-wall heat shrink tubing can protect against basic abrasion but lacks the ability to block moisture tracking, liquid fuels, or environmental oxidation along wire joins. Our high-performance RDW dual-purpose tubing completely overcomes this vulnerability through a sophisticated co-extrusion process that pairs a rugged, flame-retardant cross-linked polyolefin outer jacket with an advanced internal lining of specialized hot-melt adhesive. When heat is applied during installation, the high-precision 3:1 shrink ratio allows the outer jacket to shrink tightly over complex or irregular profiles, while the internal adhesive layer simultaneously liquefies, flowing into all air gaps and crevices. As it cools, the adhesive cures into a permanent, unyielding, and completely waterproof seal that bonds directly to the cable insulation, effectively eliminating the risk of sub-surface tracking faults and terminal failures.
Global Certification Compliance for Punishing Environments
Achieving total safety and legal compliance on critical utility and transit frameworks requires components engineered to strict global performance benchmarks. The RDW family is fully flame-retardant and self-extinguishing, carrying trusted independent safety verification and being officially UL-listed under File E523862, alongside satisfying strict RoHS environmental guidelines. This advanced chemical formulation ensures the tubing remains highly resistant to aggressive industrial chemicals, fuel oils, copper corrosion, and fungus growth, while its advanced UV stabilization prevents degradation under continuous outdoor sun exposure. Operating reliably across an expansive thermal spectrum from a freezing -55°C up to 85°C, this versatile material functions as a highly dependable and cost-effective alternative to pre-moulded shapes for managing custom cable breakouts and mechanical strain relief.
The outstanding dielectric properties and physical durability of the Radiform RDW range make it the industry-standard specification across multiple high-exposure sectors. It is heavily utilized across the automotive and marine industries to seal dual-battery cables, trailer lighting harnesses, and boat bilge pumps against severe saltwater spray and road grime. Furthermore, telecommunications engineers, and industrial automation panel builders rely on this adhesive-lined tubing to insulate complex electronic controls, inline joints, outdoor antenna feeds, and high-vibration machinery assemblies with total efficiency.
Frequently Asked Questions
What is the advantage of a 3:1 shrink ratio over a standard 2:1 ratio?
A 3:1 shrink ratio means the expanded tube will shrink down to one-third of its original inside diameter during heating. This high shrinkage capacity gives the tubing the unique ability to slip easily over large, pre-terminated connector plugs or bulky terminals, and still shrink tightly around the much smaller cable jacket behind the connector for a secure, form-fitting mechanical hold.
How does the internal adhesive wall prevent wiring corrosion?
During the shrinking process, the intense heat melts the internal hot-melt adhesive layer, forcing it to encapsulate the raw copper wire or splice join. This creates a permanent, hermetic barrier that completely blocks out oxygen, ambient moisture, salt air, and aggressive fluids, preventing localised corrosion and stopping tracking faults before they can start.
Are Radiform RDW heat shrink sleeves safe for high-exposure outdoor use?
Absolutely, our entire online inventory of Radiform RDW tubing is thoroughly UV-stabilised, fire-retardant, and resistant to chemicals, copper corrosion, and fungus growth. This robust chemical immunity makes them highly suitable for harsh outdoor solar panel grids, marine vehicle engine compartments, agricultural machinery wiring, and buried underground cable joints.
Adhesive lined heat shrink is ideal for insulating and sealing automotive, marine and RF cable joints and terminations.
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