Permatex red high strength threadlocker is OEM specified. It is an all-purpose high strength threadlocker ideal for fasteners 3/8" to 1" in size. Designed for securing parts that must withstand heavy shock, vibration or extreme chemical or environmental conditions. Locks and seals while preventing parts from loosening due to vibration. Protects threads from corrosion. Localized heating and hand tools are required to separate parts.