Hi,
You could check out Hubner & Suhner (
They have a cable called Radox 155 (See below)
RADOX® 125 or 155 multicore cable (screened or unscreened)
RADOX multicore cables are designed for various applications where high and very low operation temperatures and high resistance to ozone, weathering, oils and chemicals are needed. RADOX cables are highly flame retardant.
Characteristics
halogen free for RADOX 125
electron beam crosslinked
operation temperature -40 to +125°C for RADOX 125
operation temperature -55 to +155°C for RADOX 155
short circuit overload up to 280°C
high current carrying capacity
highly resistant to ozone, weathering, heat pressure, hydrolysis, oils and abrasion
flame retardant
soldering resistant
easy to strip and process
flexible
Regards,
Tom