ROULANT valve stem seal installation wrenches are designed and manufactured by the Madsoran Company’s engineering team with the aim of eliminating human error in the installation process and have been registered with the National Patent and Trademark Office.
The valve stem seal installation tool, relying on engineered dimensions and complete alignment with the valve stem, allows for uniform installation of the seal without impact, distortion, or damage to the seal edge.
Using this dedicated wrench preserves the actual life of the seal and prevents premature leakage, oil burning, and costly rework; a tool that complements the quality of the part in practice.

Technical Note:
Premature failure of valve stem seals results not only from the quality of the part, but also from improper installation. This wrench is designed to eliminate exactly this risk.

Competitive Advantage:
“Technology is incomplete without the right tools”
Madsoran is the only supplier that offers an engineered and patented installation solution in addition to valve stem seals.