German Akro-Plastic (Niederzissen / Germany; www.akro-plastic.com) is among the few European compounders to work with the resurrected material. One of the first available types is "Akrotek" PK with a 50% glass fibre content.
"Aliphatic polyketones have a number of interesting properties that no other polymer can offer in this combination," said a company spokesman. They include outstanding hydrolysis resistance, high barrier properties against fuel and oxygen, minimal wear and tear with homogeneous mating and extremely high resilience. A single-layer fuel line made of this material is claimed to have a higher barrier effect against fuel than a multi-layer line of PA 12 and PVDF.