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Leybold-brand Ramsay grease is 56 °C; its maximum service temperature is 25-30 °C. Its vapor pressure at 25 °C is 10 torr (0.013 mPa), at 38 °C it is 10 torr (13 mPa).
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Different grades exist (e.g. thick or viscous, soft). The viscous one is used for standard stopcocks and ground joints. The soft grade is for large stopcocks and ground joints,
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One recipe for a grease usable up to 25 °C consists of 6 parts of petroleum jelly, 1 part of paraffin wax, and 6 parts of
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Dictionary of Chemoetymology: The Whys and Whences of Chemical Nomenclature and Terminology
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42:. It is usable to about 10 mbar (about 1 Pa) and about 30 °C. Its
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at 20 °C is about 10 mbar (0.01 Pa). It is named after Sir
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112:"Losimol GmbH Hannover - Vacuum Greases (Laboratory Use)"
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An equivalent of Ramsay grease can be made by cooking
292:Notes and Records of the Royal Society of London
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193:Handbook of Preparative Inorganic Chemistry
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289:Royal Society (Great Britain) (1986).
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226:Handbook of Laboratory Distillation
90:with natural rubber extracted from
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262:. Elsevier Science. p. 391.
229:. Elsevier Science. p. 488.
163:. Elsevier Science. p. 335.
196:. Elsevier Science. p. 29.
26:, used as a lubrication and a
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295:. Royal Society of London.
133:"BDL Czech Republic s.r.o."
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157:Senning, A. (2006).
36:laboratory glassware
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32:ground glass joints
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137:the original
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114:. losimol.de
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59:paraffin wax
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74:Pará rubber
55:desiccators
337:Lubricants
321:Categories
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118:2017-01-08
98:References
92:golf balls
301:0035-9149
16:Lubricant
40:burettes
327:Greases
88:lanolin
38:, e.g.
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