Perkins Perkool 627 is a heavy duty, oil rejecting, synthetic cutting and grinding fluid developed for use in especially severe operations on all ferrous and difficult to machine exotic alloys. It provides outstanding performance in some of the most difficult machining operations and will replace straight cutting oils in many applications. Perkins Perkool 627 is designed for machining and grinding of all ferrous applications, where bio- stability, cleanliness, corrosion prevention, low odor, and high operator acceptance are primary concerns. Such applications can include but are not limited to are ; Broaching, centerless grinding, deep hole drilling, gear hobbing, gun drilling, honing, internal grinding, lapping, micro-sizing, reaming, tapping, and threading

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