Flexible (Heavy-Duty); 2 1/2" x 14"; Green Stripe Vulco-Flex® Coolant Hose
Green Stripe® Vulco-Flex® Coolant Hose is a heavy-duty flexible hose designed to replace straight or curved coolant hose.
Excellent flexibility, yet collapse and kink resistant - Hose inside diameter remains constant from end to end. No convolutions inside hose so tube is smooth, allowing free coolant flow
Heat resistant construction throughout
EPDM tube and neoprene cover for extended service life
Engineered to resist electrochemical degradation – the leading cause of hose failure
Temperature rating: –40°F to +257°F (–40°C to +125°C)
Working pressure 40 psi maximum
Performs to SAE 20R5 Type EC Class D-2 specifications
Cooling System Hose Standards
SAE
SAE 20R1: Heavy duty service; standard wall or heavy wall
SAE 20R2: Heavy duty service with embedded wire for kink and vacuum resistance
SAE 20R3: Normal service heater hose (ID under 1 inch)
SAE 20R4: Normal service radiator hose (larger IDs)
SAE 20R5: Normal service with embedded wire for high flexibility and vacuum resistance
CLASS
Class A: High temperature resistant (e.g. silicone)
Class B: High oil resistant (e.g. nitrile)
Class C: Medium oil resistant (e.g. neoprene)
Class D-1: Low oil resistant; improved service (e.g. EPDM)
Class D-2: Low oil resistant; standard service
Class D-3: Low oil resistant; high temperature resistant (e.g. p-EPDM)
*
EC suffix: Electrochemically resistant rubber;
HT suffix: High temperature resistant rubber (>125°C)
Cooling System Hose Standards