A feature of the HPH brands 1SN, 2SN, 1SC, 2SC, 4SP, 4SH is the extended operating temperature range with nominal values of -40° C and +100° C, with a permissible periodic increase to +125° C. Exceeding the allowable range will adversely affect the functional qualities of standard hoses in the form of hardening of the rubber layer, loss of flexibility and tightness of all hydraulics. For hydraulic systems with a wider temperature range we offer special ULTIMATE BLUE hoses, which work effectively at temperatures from -50° C to +135° C, and in intermittent mode - up to +150° C.