supply of silicon spray for roof insulators , silicon spray for roof insulators with following specification: physical state: liquid, colour: col ourless odour: odourless, physical and chemical properties: boiling point, degree celsius: 44 degree celciu s; vapour pressure at 20 degree celsius, hpa: 3000-8300; flash point: 97 degree celsius; viscosity kinemat ic at 40 degree celsius: < 20.5 mm/s; operating temperature range: minus 35 to 200 degree celcius; den sity at 20 degree celsius: 0.659; packaging type: can; packaging size; 500 millilitre, shelf life warranty: 05 years. make: afra aerol or avi lube s- 40 or 3m 1609 or dow corning pmx 200 or molygraph ecosil. [ warr anty period: 60 months after the date of delivery ] ]