buffer (bÅ­f'Ér) Chemistry A substance that prevents change in the acidity of a solution when an acid or base is added to the solution or when the solution is diluted.
These Ford Racing Performance Head Gaskets are specifically designed for use with cast iron or aluminum cylinder heads on a Ford 289, 302, 5.0L, or 351 Windsor V8 engine.
JEGS Copper Exhaust Gaskets are made from 0.043 thick material with an embossed sealing area to provide a tight, leakproof seal even on irregular surfaces. Because solid copper, gaskets won't shrink, corrode, or prematurely wear, which prevents exhaust leaks & loose header bolts. 1  0.043 Thick Solid Copper.