There are two basic stem seal designs - deflector and positive seals.
See full version: Inside Fel-Pro® Valve Stem Seals
There are two basic stem seal designs - deflector and positive seals.
Fel-Pro engineers analyze the OE design for every application. The OE design is tested and benchmarked. Based on the analysis, we determine the material used, considering the durometer (relative hardness) of the rubber, temperature requirements (both extreme heat and extreme cold), resistance to common oil types, tear-resistance and leak rate.
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. [links]
Don't use RTV sealant on high-temperature components like oxygen sensors and exhaust manifolds. Always use the appropriate sealer recommended by the engine manufacturer for the specific application.
RTV or room temperature vulcanizing sealant is used throughout the engine, sealing all kinds of leaks. If you've been a technician for any length of time, you've used RTV. An aerobic sealant like RTV cures in the presence of air and forms a flexible rubber gasket.
Always follow the manufacturer's specifications and procedures when using any sealant around a sensor or actuator. This sealant may be used in place of a conventional gasket only in specific applications. [links]
In this article, you will learn what is a gasket, how it works? types of gaskets used in the engine, its properties and more.
That’s it, thanks for reading. If you have any question or doubts about types of gaskets ask in the comment section below. Share this article if it is worth sharing. [links]
In the engine, the gasket is placed between the cylinder head and cylinder block to prevent leakage, to ensure metallic tight fit joint and also to maintain compression in the cylinder. The gasket should be able to withstand the high pressure and extreme temperature.
Cylinder head gasket leaks are a problem that can plague any modern internal combustion engine no matter the year, make, or model. Whether it is because the engine overheated or through high mileage and wear and tear, cylinder head gaskets can leak and cause problems. When a cylinder head gasket leaks, it means that engine coolant has leaked, either into the engine’s crankcase, or into one or more of the engine’s cylinders.
Running the engine for this period of time will give the sealer time to work and seal properly. [links]
Note: Always follow the directions on the bottle of your engine block sealer. Specific directions may vary across brands, so it is important to read the instructions carefully. This step by step guide will cover the typical steps taken when applying many engine block sealers.