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The Jay20 brand of silicone hoses are products of the silicone rubber divisions of the MCP Industries, Inc. group of manufacturing companies, headquartered in California.

The MCP group has been wholly family-owned and operated since 1950, beginning as a single manufacturing company in Los Angeles, and expanding to numerous operations globally today.   Jay20 brand hoses ship from our Corona, California warehouse.

Jay20 Series hoses are designed to meet the highest standards and conform to the relevant SAE industry specifications.  Jay20 is a value-engineered standard product line to meet requirements of the J20 class of SAE specs.  We offer it as a range of universal hoses designed in the USA for our American customers’ use in Charge Air, Coolant, Heater, and industrial applications.  It comes in two classes - High Temperature, and Ultra Temperature - across three main product lines.

We pride ourselves in the 60 plus years of engineering and polymer chemistry experience we apply to bring you the very best silicone hose technology.  Our dedication to Design and Quality means that when you depend on your engine, you can depend on our parts.

For information about non-catalog sales, contact Purosil LLC or Purosil BV.  Please find these companies at or email .

Why Silicone Hose?

Silicone rubber performs extremely well under severe temperature and environmental extremes, and far outlasts typical organic rubbers and EPDM. Silicone is the favored choice of design engineers for the most demanding charge air and coolant hose systems for turbo Diesel, Electric Vehicle cooling, and temperature / weather resistant hose systems for heavy equipment.

The Jay20 Series of performance silicone hose combine high quality silicone rubber with polyester or meta-aramid fabric reinforcements for pressure and temperature resistance while also providing low temperature flexibility and superior compression set resistance. Silicone rubber is highly weather and ozone resistant, has extremely low water absorption, and has excellent chemical resistance. See our technical product data for application guidelines, limits and specifications, or find more helpful information in our blog!

Pure Performance, Pure Quality. Turbo Hose and Coolant Hose; High-Temp and Ultra-Temp. Long lasting performance for demanding engines.

Product Lines

Jay20 Series high performance silicone hose. Blue Jay, Red Jay, Green Jay

Our Markets

Automotive, Heavy Truck, Bus and Coach, Construction and Mining Equipment, Light Commercial, Agricultural Equipment, Military and Emergency Vehicles, Stationary Generators.