Enginetech’s high quality valve stem seals are available in three categories, Premium Positive, Premium Umbrella and OE.
Enginetech Premium Positive seals are metal clad with high-temp Viton® elastomer sealing lips. All Premium Positive 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 guide sizes such as 0.482”, 0.500”, 0.512”, 0.530”, 0.562, 0.625” etc. Stem diameters range from 8.00mm to 3/8”.