Recommended for extremely low temperature high-pressure hydraulic oil line applications. Easy to route and to install in extremely tight areas. Exceeds SAE 100R19 and ISO11237 R19. Recommended Couplings: GlobalSpiral™ Couplings (-16), MegaCrimp® Couplings, Stainless Steel B Couplings (-4 through -8), Stainless Steel S Couplings (-12 and -16).