Enginetech Premium Umbrella seals are high-temp Silicone with garter springs to retain stem interference. All Premium Umbrella seals are designed to work with valve stems from 0.005” under to 0.015” over. Most of these seals can be used as a universal fit on normal stem sizes such as 8.00mm, 5/16, 11/32” and 3/8”.
Enginetech OE type seals are designed as a direct replacement for the OE part. The OE type seals are recommended for standard OE diameter valve stems only. We use only OE type materials for these seals including Viton©, polyacrylate and nylon. While many competitors use low quality nitrile materials Enginetech uses only OE material or better. We’ve got you covered with a full line of seals for your rebuilding requirements.
On some applications, the valve stem seals are interchangeable between the intake and exhaust valves and will look exactly the same. On applications which use different seals on the intake and exhaust valves, due to needing higher temperature material on the exhaust side or different design, the seals will be bagged and labeled appropriately.
An installation tool is included in Fel-Pro valve stem seal (VS) sets. This tool is a thin plastic sleeve which is placed over the tip of each valve stem during installation. It protects the inner lip of the seal from damage by the lock grooves in the valve stem.
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The content contained in this article is for informational purposes only and should not be used in lieu of seeking professional advice from a certified technician or mechanic. We encourage you to consult with a certified technician or mechanic if you have specific questions or concerns relating to any of the topics covered herein. Under no circumstances will we be liable for any loss or damage caused by your reliance on any content.