Quote:
I disagree about the temp rating of hydraulic hose...the stuff I have on my bypass is rated at 300*F
Go through them all. Go to Northerntool ...TSC ..Gates. There's only one below that's rated over 212F. What they do have is (typically) is 2000 psi operating ratings and 5000 psi burst ratings.
http://www.discounthydraulichose.com/Sea...CFQOuFQodJWoyMA
SAE 100R2 AT
Two-Wire Braids
Recommended For: High Pressure hydraulic lines. Meets or exceeds requirements of SAE 100R2AT.
Tube: Black, oil resistant, Nittrile (BTR).
Reinforcement: Two braids of high tensile steel wire
Cover: Black, oil and abrasion resistant Neoprene (CR).
Temperature Range: -40 F to +212 F
SAE 100R16
Recommended For: High Pressure hydraulic lines. Meets or exceeds requirements of SAE 100R16.
Tube: Black, oil resistant, Nittrile (BTR).
Reinforcement: Two braids of high tensile steel wire
Cover: Black, oil and abrasion resistant Neoprene (CR)
Temperature Range: -40 F to +212 F
SAE 100R17
Recommended For: High Pressure hydraulic lines. Meets or exceeds requirements of SAE 100R2AT.
Tube: Black, oil resistant, Nittrile (BTR).
Reinforcement: One or two braids of high tensile steel wire
Cover: Black, oil and abrasion resistant Neoprene (CR)
Temperature Range: -40 F to +212 F
Technical Specifications:
* Meets or exceeds all requirements of SAE 100R1AT
* Temperature range: -40° to +212° Fahrenheit.
DHH Item# Inside
Diameter Outside
Diameter Max. Working
Pressure Min. Burst
This hose is suitable for hydraulic fluids on mineral oil and synthetic oil basis (HL, HLP, HLPD, HVLP), oil-water-emulsions (HFAE, HFAS, HFB), water-glycol liquids (HFC), vegetable and mineral oil based lubricants, cooling water, and compressed air. Also generally suitable for biologically degradable hydraulic liquids (HETG, HEPG, HEES) however limited by fluid additives.
Not suitable for hydraulic fluids on phosphate ester basis (HFD).
Very High Pressure Hydraulic Hose (4-wire)
Recommended for petroleum and water-bases hydraulic fluids in very high pressure applications. Meets or exceeds all requirements of SAE 100R12.
* Long-lasting cover is well-suited for mobile hydraulics.
* Black, oil resistant, synthetic rubber tube.
* Four spiral layers of high tensile steel wire reinforcement.
* Oil and abrasion resistant, gray synthetic rubber cover.
* Temperature range: -40° to +250° Fahrenheit.
* No skiving required.
SAE 100R12 HoseSpecifications
Medium Pressure Hydraulic Hose
"R3" is a fiber reinforced hydraulic hose for applications where steel wire is not desired. Recommended for medium pressure fuel and oil lines, as well as hydraulic return and suction lines. Meets or exceeds all requirements of SAE 100R3.
* Black, oil resistant Nittrile (BTR) tube.
* Two layers of braided fiber reinforcement.
* Oil and abrasion resistant, black Neoprene (CR) cover.
* Temperature range: -40° to +212° Fahrenheit.
* No skiving required.
SAE 100R3 Hose Specifications
This hose is suitable for hydraulic fluids on mineral oil and synthetic oil basis (HL, HLP, HLPD, HVLP), oil-water-emulsions (HFAE, HFAS, HFB), water-glycol liquids (HFC), vegetable and mineral oil based lubricants, cooling water, and compressed air. Also generally suitable for biologically degradable hydraulic liquids (HETG, HEPG, HEES) however limited by fluid additives.
Now if you got to SAE J1019 (transmission cooler line hose) ..you get a much higher temp rating at much lower pressure.
SAE J1019
1. Scope--This SAE Standard is intended to establish uniform methods for testing and evaluation of hose and hose assemblies for use in high temperature transmission oil systems and high temperature lubricating oil systems using petroleum base oils within a temperature range of −40° to 150°C (−40° to 302°F) and a maximum working pressure of 1.5 MPa (217 psi). Hose construction, dimensions, identification, and hose fitting configurations shall be agreed upon by the supplier and user.
http://www.gates.com/brochure.cfm?brochure=5122&location_id=5094
If your hose doesn't sport one of the numbers you see in the above link ..then you've probably got a 212F rating at EXTREME pressure (by automotive standards).