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37-456: [REDACTED] Look up grease in Wiktionary, the free dictionary. Grease may refer to: Common uses [ edit ] Grease (lubricant) , a type of industrial lubricant Grease, any petroleum or fat (including cooking fat) that is a soft solid at room temperature Brown grease , waste vegetable oil, animal fat, grease, etc. that

74-457: A release agent . Solid additives cannot be used in bearings because of tight tolerances. Solid additives will cause increased wear in bearings. Grease from the early Egyptian or Roman eras is thought to have been prepared by combining lime with olive oil . The lime saponifies some of the triglyceride that comprises oil to give a calcium grease. In the middle of the 19th century, soaps were intentionally added as thickeners to oils. Over

111-660: A base bath. Fluoroether-based greases are inert to many substances including solvents, acids , bases , and oxidizers . They are, however, expensive, and are not easily cleaned away. Food-grade greases are those greases that may come in contact with food and as such are required to be safe to digest. Food-grade lubricant base oil are generally low sulfur petrochemical, less easily oxidized and emulsified. Another commonly used poly-α olefin base oil as well. The United States Department of Agriculture (USDA) has three food-grade designations: H1, H2 and H3. H1 lubricants are food-grade lubricants used in food-processing environments where there

148-421: A role in forensic entomology . A. cuprina was recently found feeding on the greasy remains of a deceased individual. The use of A. cuprina as an insect of significant forensic importance is still being researched. Research on the species' life cycle has yet to be completed, but it has been shown to have a similar life cycle to that of Aglossa caprealis . A. caprealis lays an average of 60-300 eggs during

185-411: A silken substance that intertwines with the surrounding product. With substantial infestations, the larvae will spread throughout the product and with them spread their silk rendering the product unsellable. Most infestations occur in products that are stored for long periods of time in storage facilities. In addition to stored product entomology, recently evidence suggests that A. cuprina may soon play

222-430: A single reproductive cycle. The eggs are commonly laid on overhanging supports. The time it takes for the eggs to hatch is temperature dependent and take between 2–14 days to hatch. Once the eggs have hatched, the larval stage will last 2–41 weeks before pupating. The larval stage prefers to live in dark secluded environments, and creates flexible tubular galleries. The galleries are supported by silken fibres produced by

259-406: A slang term for killing , as in "The mob has been known to grease anyone who gets in its way" Pomade , a hair styling wax Arts, entertainment, and media [ edit ] Theater [ edit ] Grease (musical) , a 1971 musical play Films [ edit ] Grease (film) , 1978 film made from the musical, starring John Travolta and Olivia Newton-John Grease 2 ,

296-528: A wingspan that averages about an inch and a half (38 mm), and exhibits an overall dark, greyish-brown colour. While the forewings are brownish grey with pale yellowish markings (much like those of a tabby cat , hence the lesser-used common name), the top of the head and neck are simply pale yellow. A. cuprina is also known for its filiform (thread-like) antennae. A. cuprina has been found in Europe, Asia, Australia, North America and South America. A. cuprina

333-480: Is 120 °C. The amount of grease in a sample can be determined in a laboratory by extraction with a solvent followed by e.g. gravimetric determination. Some greases are labeled "EP", which indicates " extreme pressure ". Under high pressure or shock loading, normal grease can be compressed to the extent that the greased parts come into physical contact, causing friction and wear. EP greases have increased resistance to film breakdown, form sacrificial coatings on

370-403: Is an off white rounded oval. During the larval stage, A. cuprina has a brownish head and greyish body. The A. cuprina larvae also have black mandibles and a black peritreme (part of the integument of an insect which surrounds the spiracles). They can be distinguished from A. caprealis larvae by setal differences. The pupae are reddish brown with six curved, hooked setae. The moth has

407-417: Is commonly expressed by its NLGI consistency number . The main elements of standard ATSM D4950 and NLGI's consistency classification are reproduced and described in standard SAE J310 “automotive lubricating greases” published by SAE International. Standard ISO 6743-9 “lubricants, industrial oils and related products (class L) — classification — part 9: family X (greases)” , first released in 1987 by

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444-428: Is different from Wikidata All article disambiguation pages All disambiguation pages Grease (lubricant) A common feature of greases is that they possess high initial viscosities , which upon the application of shear, drop to give the effect of an oil-lubricated bearing of approximately the same viscosity as the base oil used in the grease. This change in viscosity is called shear thinning . Grease

481-637: Is distributed throughout eastern North America and sightings have been recorded in California, Arkansas, Arizona, Connecticut, the District of Columbia, Delaware, Florida, Illinois, Massachusetts, Maryland, Missouri, North Carolina, New Hampshire, New Jersey, New York, Pennsylvania, South Carolina, Texas and Wisconsin. The moth stage is generally found in early summer between the months of May and August. They tend to inhabit areas around or in human habitation and buildings. When found in homes, they are generally found in

518-520: Is often applied using a grease gun , which applies the grease to the part being lubricated under pressure, forcing the solid grease into the spaces in the part. Soaps are the most common emulsifying agent used, and the selection of the type of soap is determined by the application. Soaps include calcium stearate , sodium stearate , lithium stearate , as well as mixtures of these components. Fatty acids derivatives other than stearates are also used, especially lithium 12-hydroxystearate . The nature of

555-430: Is one popular material used to create a water-based analog of greases. CMC serves to both thicken the solution and add a lubricating effect, and often silicone-based lubricants are added for additional lubrication. The most familiar example of this type of lubricant, used as a surgical and personal lubricant , is K-Y Jelly . Cork grease is a lubricant used to lubricate cork, for example in musical wind instruments. It

592-422: Is recovered from a grease trap Yellow grease , in rendering, used frying oils, or lower-quality grades of tallow Hydrogenated vegetable oil , used as a replacement for lard and other rendered animal fats Vegetable shortening , used as a replacement for lard and other rendered animal fats Slang [ edit ] Grease, a euphemism meaning to bribe , as in " to grease someone's palm" Grease,

629-474: Is sometimes used to describe lubricating materials that are simply soft solids or high viscosity liquids, but these materials do not exhibit the shear-thinning properties characteristic of the classical grease. For example, petroleum jellies such as Vaseline are not generally classified as greases. Greases are applied to mechanisms that can be lubricated only infrequently and where a lubricating oil would not stay in position. They also act as sealants to prevent

666-476: Is the possibility of incidental food contact. H2 lubricants are industrial lubricants used on equipment and machine parts in locations with no possibility of contact. H3 lubricants are food-grade lubricants, typically edible oils, used to prevent rust on hooks, trolleys and similar equipment. In some cases, the lubrication and high viscosity of a grease are desired in situations where non-toxic, non-oil based materials are required. Carboxymethyl cellulose , or CMC,

703-407: Is usually applied using small lip-balm /lip-stick like applicators. New location: Navigate to USACE Home > [Publications] > [Engineer Manuals] > [EM 1110-2-1424 Lubricants and Hydraulic Fluids] Aglossa cuprina Aglossa cuprina , the grease moth , is a snout moth , family Pyralidae, described by Philipp Christoph Zeller in 1872. The grease moth is closely related to

740-598: The International Organization for Standardization , establishes a detailed classification of greases used for the lubrication of equipment, components of machines, vehicles, etc. It assigns a single multi-part code to each grease based on its operational properties (including temperature range, effects of water, load, etc.) and its NLGI consistency number. Silicone grease is based on a silicone oil , usually thickened with amorphous fumed silica . Fluoropolymers containing C-O-C (ether) with fluorine (F) bonded to

777-464: The 1982 film sequel, starring Maxwell Caulfield and Michelle Pfeiffer Music [ edit ] "Grease" (song) , the title song of the 1978 film "Grease" song, a song from the 1971 musical play Grease: The Original Soundtrack from the Motion Picture , the soundtrack album to the 1978 film Grease: The New Broadway Cast Recording (2007 album) , the new Broadway cast recording of

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814-484: The carbon. They are more flexible and often used in demanding environments due to their inertness. Fomblin by Solvay Solexis and Krytox by duPont are prominent examples. Apiezon, silicone-based, and fluoroether-based greases are all used commonly in laboratories for lubricating stopcocks and ground glass joints. The grease helps to prevent joints from "freezing", as well as ensuring high vacuum systems are properly sealed. Apiezon or similar hydrocarbon based greases are

851-535: The centuries, all manner of materials have been employed as greases. For example, black slugs Arion ater were used as axle -grease to lubricate wooden axle-trees or carts in Sweden. Jointly developed by ASTM International , the National Lubricating Grease Institute (NLGI) and SAE International , standard ASTM D4950 “standard classification and specification for automotive service greases”

888-561: The cheapest, and most suitable for high vacuum applications. However, they dissolve in many organic solvents . This quality makes clean-up with pentane or hexanes trivial, but also easily leads to contamination of reaction mixtures. Silicone-based greases are cheaper than fluoroether-based greases. They are relatively inert and generally do not affect reactions, though reaction mixtures often get contaminated (detected through NMR near δ 0 ). Silicone-based greases are not easily removed with solvent, but they are removed efficiently by soaking in

925-522: The day and can be found in stables, outhouses, barns, warehouses, and cellars. They are also attracted to light and sugar. A. cuprina is often involved in stored product entomology . Stored product entomologists often advise producers on ways to reduce the chances of insect infestation and thus remain under food defect action levels. A. cuprina is a common aspect of stored product entomology due to its caterpillars ' feeding habits. Grease moth larvae infest dried grain products and as it feeds it produces

962-445: The durability of the grease. Silicone greases are generally thickened with silica . Lithium-based greases are the most commonly used; sodium and lithium-based greases have higher melting point ( dropping point ) than calcium-based greases but are not resistant to the action of water . Lithium-based grease has a dropping point at 190 to 220 °C (374 to 428 °F). However the maximum usable temperature for lithium-based grease

999-424: The fluid is reduced under shear stress . After sufficient force to shear the grease has been applied, the viscosity drops and approaches that of the base lubricant, such as mineral oil. This sudden drop in shear force means that grease is considered a plastic fluid , and the reduction of shear force with time makes it thixotropic . A few greases are rheotropic , meaning they become more viscous when worked. Grease

1036-474: The genus Pyralis , and as a result, is usually associated with the meal moth, Pyralis farinalis . Aglossa cuprina ingests grease produced by the bacteria that feed on decaying matter. A. cuprina was named by German entomologist Philipp Christoph Zeller in 1872. The specific epithet, A. pinguinalis , its other binomial name, is derived from the Latin , pinguinalis (greasy). The egg of A. cuprina

1073-402: The ingress of water and incompressible materials. Grease-lubricated bearings have greater frictional characteristics because of their high viscosities. A true grease consists of an oil or other fluid lubricant that is mixed with a thickener, typically a soap , to form a solid or semisolid. Greases are usually shear-thinning or pseudo-plastic fluids , which means that the viscosity of

1110-709: The kitchen and more specifically in the pantry where their choice food source is stored. They are also commonly found in areas where dried grain products are stored, for example, warehouses and areas of grain elevators that remain undisturbed. Aglossa cuprina has similar feeding habits to those of the grains moths. The larval stages feed primarily on dried grain based products including corn meal, whole wheat flour , graham flour , granola , and dried oats . The adults feed on butter, suet and grease, and have even been found in excrement. They have been known to feed on dried remains of other insects as well. The adults fly at dusk between June and July. They hide in dark corners during

1147-440: The lead roles in revivals of the musical Episodes [ edit ] "Grease", a 1997 episode of the cartoon Extreme Ghostbusters Other uses in arts, entertainment, and media [ edit ] Grease (video game) , a video game based on the 1978 film Biology and healthcare [ edit ] Grease, or Mud fever , a disease causing irritation and dermatitis in the lower limbs of horses, most commonly in

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1184-506: The metal surface to protect if the film does break down, or include solid lubricants such as graphite , molybdenum disulfide or hexagonal boron nitride (hBN) to provide protection even without any grease remaining. Solid additives such as copper or ceramic powder (most often hBN) are added to some greases for static high pressure and/or high temperature applications, or where corrosion could prevent dis-assembly of components later in their service life. These compounds are working as

1221-498: The musical featuring Max Crumm and Laura Osnes Television [ edit ] Series [ edit ] Grease: Live , a U.S. 2016 live TV musical that combines aspects of the 1971 musical play and 1978 film Grease: You're the One that I Want! , a U.S. 2007 reality TV show casting the lead roles in revivals of the musical Grease is the Word , a U.K. 2007 reality TV show casting

1258-516: The pastern and heel area Grease moth ( Aglossa cuprina ), a fat-feeding moth Computing [ edit ] Grease (networking) , or GREASE, a protocol ossification prevention method See also [ edit ] [REDACTED] Wikiquote has quotations related to Grease . All pages with titles beginning with Grease All pages with titles containing Grease Greaser (disambiguation) Greasy (disambiguation) Greece (disambiguation) Topics referred to by

1295-409: The same term [REDACTED] This disambiguation page lists articles associated with the title Grease . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Grease&oldid=1247719096 " Category : Disambiguation pages Hidden categories: Short description

1332-482: The soaps influences the temperature resistance (relating to the viscosity), water resistance, and chemical stability of the resulting grease. Calcium sulphonates and polyureas are increasingly common grease thickeners not based on metallic soaps. Powdered solids may also be used as thickeners, especially as absorbent clays like bentonite . Fatty oil-based greases have also been prepared with other thickeners, such as tar , graphite , or mica , which also increase

1369-458: Was first published in 1989 by ASTM International. It categorizes greases suitable for the lubrication of chassis components and wheel bearings of vehicles, based on performance requirements, using codes adopted from the NLGI's “chassis and wheel bearing service classification system” : A given performance category may include greases of different consistencies. The measure of the consistency of grease

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