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Internal combustions engines require lubrication in operation that moving parts slide smoothly over each other. Insufficient lubrication subjects the parts of the engine to metal-to-metal contact, friction, heat build-up, rapid wear often culminating in parts becoming friction welded together e.g. pistons in their cylinders.
A rocker cover, (UK), or valve cover (elsewhere) is a cover that encloses the rocker arm in an internal combustion engine, bolting with a gasket seal to the engine head. Engines with more than one head (such as a V8 ) will have multiple rocker covers.
The seal ring and mating ring are sometimes referred to as the primary sealing surfaces. The primary sealing surfaces are the heart of the end-face mechanical seal. A common material combination for the primary sealing surfaces is a hard material, such as silicon carbide, ceramic or tungsten carbide and a softer material, such as carbon. Many ...
Head gasket with a leak between the rightmost and centre cylinders. A leak in the head gasket - often called a "blown head gasket" - can result in a leak of coolant, the combustion gasses, or both. Blue smoke from the exhaust suggests that excess oil is entering the combustion chambers (although there are other possible causes than a head ...
Gaskets allow for "less-than-perfect" mating surfaces on machine parts where they can fill irregularities. Gaskets are commonly produced by cutting from sheet materials. Given the potential cost and safety implications of faulty or leaking gaskets, it is critical that the correct gasket material is selected to fit the needs of the application. [2]
Precision Castparts Corp. is an American industrial goods and metal fabrication company that manufactures investment castings, forged components, and airfoil castings for use in the aerospace, industrial gas turbine, and defense industries.
99C: "C" presumably means "clip", because the 99C was the only variant to have a detachable box magazine rather than the iconic internal rotary magazine. The Model 99C was primarily based on the 99F and was produced from 1965 to 1997. 99CD: Deluxe version of the Model 99C. The Model 99CD had a Monte Carlo cheekpiece stock.
A plain Derby shoe. A derby (UK: / ˈ d ɑːr b i / ⓘ DAR-bee, US: / ˈ d ɜːr b i / DUR-bee; also called gibson [1]) is a style of boot or shoe characterized by quarters, with shoelace eyelets, that are sewn on top of the vamp. [2] This construction method, also known as "open lacing", contrasts with that of the Oxford shoe. [citation needed]