The PPE Compound Washer is composed of an oil-resistant rubber inner ring and a steel outer ring. It ensures a tight seal between the drain plug and the oil sump and remains effective through multiple oil changes.

It is compatible with both 12- and 14-mm PPE Stainless Steel Magnetic Drain Plugs, part numbers 114052201 and 114052001. It is also compatible with many OEM drain plugs with 12-14mm threads.