SAE J20R3 Test Standard for Blue Silicone Heat Hose

Material Testing

SAE J20R3 Test Standard for Blue Silicone Heat Hose

The NL4875 is a quality silicone hose that meets the operating requirements of SAE J20R3 Class A heater hose (& TMP RP303B Class I, Grade 2) that will remain flexible and aging-free after prolonged exposure to extreme temperatures, weathering or ozone.

SAE J20R3 Test Standard for Blue Silicone Heat Hose

Not for use with silicone oil, but resistant to engine oil "mist" found under normal operating conditions. It is soft. It can warp after years of use compared to traditional rubber that will harden and crack.

When installing silicone hose, the N62ET extended liner thread clamps will prevent the soft cap from tearing during service. For larger sizes we recommend using the N68SL. We recommend using spring loaded T-bolt clamps to maintain holding power during temperature fluctuations.

Always check the clamps after assembly and ensure that the proper clamp torque values ​​are adhered to. For retail display, this hose is available in 50 ft distribution boxes. Meta-aramid reinforcement is available for higher temperatures.

This mandrel structure radiator hose is suitable for supplying hot water and antifreeze in cooling systems. The hose cover of the car heater hose is a smooth CR/NBR rubber coating that is weather, abrasion and oil resistant. Also this has a smooth bore with EPDM lining making it suitable for ethylene glycol solutions. The high tensile strength textile ply reinforcement allows operating pressures up to 10 bar with minimal safety factor.

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