Their function is to seal off gases generated in the internal combustion process, help with transferring heat to the cylinder wall and then to both lubricate and scrape down oil from it. Getting the quantities of oil right is vital. Too much oil will cause it to burn off during combustion potentially making your engine produce blue smoke, too little will cause the engine ultimately to seize. http://www.wellfarengineparts.com/piston-ring/

Because glass expands and contracts with changes in temperature, care must be taken when reagent bottles are heated and cooled. When a reagent bottle is heated, the neck expands, allowing the tapered stopper to drop farther into the bottle. When the bottle is then cooled, the neck shrinks around the stopper, locking it in place. The rough surface of the neck and stopper prevents the stopper from sliding up as the neck shrinks. http://www.sun-trine.com/reagent-bottle/

The roofing industry is full of different names and terms that are hard to understand as a homeowner. This can be confusing and often frustrating. Especially when different roofing contractors use different terms to mean the same thing. This brings us to a commonly asked question, “Are composition shingles and asphalt shingles the same thing?” For over 30 years, the team at Bill Ragan Roofing has helped homeowners understand the lingo, terminology, and other aspects of the roofing industry. Now we'll be doing the same thing for you. http://www.onicesroofing.com/asphalt-shingle/

Freezing food and maintaining it at 0° Fahrenheit will keep it safe. The quality could suffer during lengthy freezer storage. Freezing keeps food safe by slowing down the movement of molecules, causing microbes to enter a dormant stage. The freezing process preserves food for extended periods because it prevents the growth of microorganisms that cause both food spoilage and foodborne illness. http://www.mtehomelife.com/kitchen-shelf-rack/

Small amounts of bauxite can be found in Arkansas, Alabama, and Georgia. Overall, though, there is very little mining of the mineral in the U.S., with 99% of it being imported from other countries. Around the world, Australia, China, Brazil, India, Guinea, Jamaica, Russia, Kazakhstan, Suriname, and Greece are the top ten leading bauxite producing countries. The top producers of bauxite have enough reserves for many years of continued production, with some having reserves lasting 100 years. http://www.kingconref.com/bauxite/rotary-kiln-bauxite/

Most candles are made of paraffin wax (a petroleum waste product that is chemically bleached), which creates highly toxic benzene and toluene (both are known carcinogens) when burned. In fact, the petro-soot released from paraffin candles are the same as those found in diesel fuel fumes and can be as dangerous at second-hand smoke. In 2001, the EPA concluded that burning paraffin candles emit harmful toxins and increase health risks with multiple exposures. http://www.crystalcandlesupplies.com/candle/scented-candle/

Opal glass has been around a long time, it was first manufactured by glass blowing houses in 16th century Venice! Opal glass is made by adding opacifiers to the melt. The particles in the opacifiers scatter light via the Tyndal Scattering Mechanism. The way light is scattered and the secondary colors produced depend on the size of the particles in the opacifiers added to the melt. Modern opal glass typically has the appearance of opaque white glass, but has also been manufactured historically in pink, blue, yellow, brown and black. http://opal%20glass%20pump%20bottle/

When we buy gizmos, we try to make sure that they have a good, long-lasting battery. Although, we only look at battery capacities. The formula seems simple – the larger the capacity, the better the battery life, right? But have you ever tried to find out what do terms like Li-ion and Li-Po mean? These abbreviations denote the types of batteries your device packs, and this plays a vital role in keeping your device juiced up. Let’s take a deeper look at these battery types and how they affect our phones and laptops in our daily life. http://www.candovip.com/battery-and-energy-storage/polymer-li-ion-battery/

If you're mentally picturing a stand mixer, chances are what you're thinking of is the KitchenAid version — like Kleenex and Q-Tips, the brand name has become the industry standard descriptor, likely much to the chagrin of Breville, Cuisinart, et al. As of 2014, KitchenAid was selling more than 2.5 million stand mixers annually, so for all intents and purposes, that's probably the only brand you've encountered. http://www.astandmixer.com/stand-mixer/

Please note that the engine water cooling systems are either closed or open systems. Closed system is designed to use the same coolant with a closed circuit, preventing the losses of the coolant. While the open system uses the coolant once and discharges it or recirculates the coolant through systems, which cool the coolant by evaporation. Most of the stationary diesel engines use closed systems to control the chemistry of the coolant to prevent fouling of heat transfer surfaces and to closely control the temperatures. http://www.yey-business.com/diesel-engine/water-cooled-single-cylinder-diesel-engine/