Enginetech umbrella valve stem seals are so unique...they're patented

You can virtually eliminate valve stem seal-related oil consumption comebacks with the Rebuilder's Valve Stem Seal, from Enginetech. It makes all other seals obsolete!

The Rebuilder's Valve Stem Seal uses state-of-the art design and materials to solve seal problems in today's hot-running engines.

Both umbrella and positive (guide-mounted) seal designs are available, with the best consolidation program in the industry.

The Rebuilder's Valve Stem seals are the only positive and umbrella seals that precisely fit undersize, standard and oversize stems. The precise fit is no accident. We consolidated the applications first, then designed the seals to meet rebuilders' needs and solve the problems seals face in today's high-temperature, oil additive conditions.

Umbrella Seals
Enginetech's umbrella seals take the heat and the oil additives. Premium silicone material is rated for continuous duty at 350°F, without cracking or hardening. And these seals are ribbed for easy part number identification. Installation is easy, too. Simply slip them over the stems and they are ready for service. Enginetech umbrella stem seals are so unique, they're patented.

Positive Seals
Enginetech's positive seals solve the problems common to most other guide-mounted seals which starve the guide of oil at first, leading to premature wear. That, in turn, causes oil to flood through the guides.

Enginetech uses a spring-loaded state-of-the art Viton lip to meter oil precisely from the first day. This fluoroelastomer material is extremely resistant to heat, oil additives and abrasion.

The seals are available in kits packaged with the mylar sleeves and tools needed for proper installation. Standard guide cutters are available and should be used where required.

The Rebuilder's Valve Stem seal performed perfectly in extended field tests in high-temperature conditions on high-mileage vehicles, despite worn valve stems and the presence of carbonized oil.

Enginetech's engineers researched every stage of engine rebuilding, analyzing design, installation and wear problems. Their seal designs virtually eliminate comebacks for oil consumption caused by valve stem seals, and reduce the number of seals rebuilders need to carry in inventory.

You simply can't buy valve stem seals for any production application that works as well, at any price.

The Rebuilder's Valve Stem Seal will help you build longer life into today's hot-running engines. They are engineered by Enginetech to meet your needs for premium-quality, competitively-priced engine parts. Of course, they are backed by excellent customer service and technical support.