Utilizes Floroelastomer (FKM) material for traditional look and operation, We use double check valves with viton balls and stainless steel springs, I.D. : 1/4" or 6.4mm,

• 7 1/2" or 190.5mm overall length including barbs
• Both EPA/CARB certified
• Meets current EPA regulations in effect 1/1/2011 of 15 g/m2/24 hrs
• Our bulbs are molded in house
• Sierra is a leading supplier of primer bulbs to the marine aftermarket