Extreme H07RN-F 90°C HOFR submersible flex

Extreme H07RN-F 90°C HOFR submersible flex is available in single or multicore formats. HOFR = heat & oil resistant, flame retardant rubber. They are designed for trailing or mobile power supply applications in extreme environments including submersion in water. Commonly used in generators, portable equipment, moving machinery, handling equipment & underwater pumps.

This cable is suitable for indoor or outdoor applications including in permanently submersed installations. For example in port areas, dams, drainage or water treatment works, water features, oily or refrigerated conditions.

These Extreme H07RN-F 90°C HOFR cables are ideal for power transmission in both fixed or flexible installations. Nominal voltage up to 1000V is accepted in fixed protected assemblies.

Type EM2 Thermosetting Rubber Properties: this self-extinguishing compound has excellent resistance to oxygen, UV, ozone & water and very good resistance to acids, alkalis & solvents. It also has excellent abrasion resistance.


Construction – Extreme H07RN-F 90°C HOFR
fine stranded electrolytic annealed copper conductors
thermosetting rubber core insulation type EI7 according to EN 50363-1
black thermosetting flexible rubber outer sheath type EM2 according to EN 50363-2-1


Technical – Extreme H07RN-F 90°C HOFR
conductor make-up: class 5 (flexible fine stranded)  see Stranding/Resistance page
bend radius: 3-4x overall diameter (O/D) fixed, 6-8x O/D flexing
voltage rating: 450/750V operating, 2500V test
use up to 1000V acceptable in fixed protected assemblies
current rating: see information on PDF data sheet below
temperature range: -25°C to +90°C flexible, -40°C to +90°C fixed
water resistance: according to AD8 (permanent submersion)
submersible in drinkable water according to AS/ NZS 4020
construction: according to EN 50525-2-21 and IEC 60245
flame retardant: according to EN 60332-1 and IEC 60332-1
core identification: 2 cores = coloured to VDE 0293 without earth (green/yellow)
3-5 cores = as above with earth (inc. in core count), see Colour Codes page
7+ cores = numbered black cores with earth (inc. in core count)


A printable specification is available here: Extreme H07RN-F submersible 90’C rubber flex


A similar cable with standard rubber sheathing can be found here: H07RN-F heavy duty rubber


For more rubber flexible cables return to the Rubber or PUR Flex and Welding front page.


All measurements should be considered nominal and images for illustration purposes only. Although Central Cables Ltd has made every reasonable effort to ensure its accuracy, the information contained herein is subject to error or omission and to change without notice. In no event will Central Cables Ltd be liable for any damages whatsoever, arising in connection with the information described.