• Nitrile Butadiene Rubber (NBR) Vacuum Cap Assortment. • This vacuum cap kit provides a quick and sure way to seal vacuum connections. • Use them on carburetors, manifolds, etc., where various vacuum tube caps are needed for different sized vacuum ports. • Cap lines and hoses while testing emission control systems, diaphragm and much more. • These vacuum caps are constructed from durable, heat-resistant Nitrile rubber. • Includes: 20ea 3/16", 20ea 5/32", 20ea 7/32", 10ea 1/4", 5ea 5/16", 5ea 3/8"
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