Apiezon H High Temperature Vacuum Grease, 25 Gram Tube Apiezon H is designed for applications at higher temperatures and of all the Apiezon greases, is the formulation for the highest temperatures. Apiezon H grease can be used over a wide range of temperatures from -10 to + 240° C, while optimum consistency is retained at between +10 and +110° C. There are a growing number of applications for Apiezon H outside of the vacuum area, for example, it is used on a heatsink fan for a computer central processing unit (CPU). Apiezon H grease exhibits good vacuum properties (ultimate vapor pressure 1.7x10-10 Torr at 20°C) in the lower to medium vacuum range at higher temperatures, while at lower temperatures, Apiezon H grease can be used in the high vacuum range. Apiezon H is a filled hydrocarbon grease which exhibits excellent heat transfer properties. Allowing heat to conduct away from a site of operation, Apiezon H grease will reduce the danger of overheating and hence will limit the risk of damage to heat sensitive components. Apiezon H grease is manufactured from a unique feedstock containing a high proportion of branched and unsaturated hydrocarbons. These complex structures give Apiezon H grease a very high molecular weight and consequently, strong powers of absorption, particularly for other hydrocarbon molecules. Strong absorption properties ensures that Apiezon H grease has powerful gettering action, that is, the power to absorb greasy or chemical impurities on metal and glass surfaces. This is of considerable value in the electronics industry where scrupulous cleanliness of metal surfaces is required.

Apiezon L Ultra High Vacuum Grease With Vapor Pressure of 2x10-11 torr at 20° C, Silicone & Halogen Free, 50 G Tube Apiezon Grease, Type L relative to the other Apiezon greases, contains lower molecular weight wax and is reported to contain absolutely no additives whatsoever. The ultimate vapor pressure is 2x10-11 torr at 20° C and the best of all the Apiezon greases. . The grease can be used in gas liquid chromatography applications and also, the ground glass joints of any vacuum system. The melting point is quite low, and Apiezon grease, type L is not recommended for use at temperatures exceeding 30° C, so this is strictly for room temperature applications. One would not want to use this grease near the filament housing (which gets quite hot) in any SEM or TEM since there would be quite substantial off-gassing of the low melting point product. And remember, this grease is completely hydrocarbon and is totally free of any silicones or halogens. Apiezon L is highly versatile and can be applied in a number of different ways. It can be dissolved in a variety of organic solvents. One advantage of Apiezon L over certain other greases, such as silicon greases, is that it can be dissolved in a number of different solvent liquids for a more highly controlled deposition on a surface. Hexane: Apiezon L will dissolve in hexane to 11% weight/weight. When heated to 50°C , the solution becomes cloudy. d-limonene: This might be a better solvent, it is extracted from orange peel and can be purchased from the Florida Chemical Company, Inc. This leaves a gel at room temperature and a concentration of 11%weight/weight. When heated to 50°C, the solution becomes clear which indicates that although the grease is molten at this temperature, it is still compatible with the solvent. Lower temperatures might be possible but we have data only for 50°C. Toluene: Behaves similarly to d-limonene but remains slightly cloudy at 50°C. Apiezon L grease can also be used to protect electrical contacts. Apiezon L grease can also be used to protect electrical contacts. The grease itself is of course an insulator, however, the grease film on a contact is so thin at the actual point of contact that it just does not interfere with the passage of electrical current except for the smallest of voltages. To further clarify this point, Apiezon L has an electrical strength of 720 volts per mil (0.001/25 µm). In a metal to metal contact the film of grease would be only of the order of 0.00001/0.25 µm) or less, giving an electrical strength of only 7 volts. For contacts operating at high temperatures, use Apiezon T. Trace element analysis: Apiezon L grease is known for its low levels of trace elements.

Apiezon L Ultra High Vacuum Grease With Vapor Pressure of 2x10-11 torr at 20° C, Silicone & Halogen Free, 25 G Tube Apiezon Grease, Type L relative to the other Apiezon greases, contains lower molecular weight wax and is reported to contain absolutely no additives whatsoever. The ultimate vapor pressure is 2x10-11 torr at 20° C and the best of all the Apiezon greases. . The grease can be used in gas liquid chromatography applications and also, the ground glass joints of any vacuum system. The melting point is quite low, and Apiezon grease, type L is not recommended for use at temperatures exceeding 30° C, so this is strictly for room temperature applications. One would not want to use this grease near the filament housing (which gets quite hot) in any SEM or TEM since there would be quite substantial off-gassing of the low melting point product. And remember, this grease is completely hydrocarbon and is totally free of any silicones or halogens. Apiezon L is highly versatile and can be applied in a number of different ways. It can be dissolved in a variety of organic solvents. One advantage of Apiezon L over certain other greases, such as silicon greases, is that it can be dissolved in a number of different solvent liquids for a more highly controlled deposition on a surface. Hexane: Apiezon L will dissolve in hexane to 11% weight/weight. When heated to 50°C , the solution becomes cloudy. d-limonene: This might be a better solvent, it is extracted from orange peel and can be purchased from the Florida Chemical Company, Inc. This leaves a gel at room temperature and a concentration of 11%weight/weight. When heated to 50°C, the solution becomes clear which indicates that although the grease is molten at this temperature, it is still compatible with the solvent. Lower temperatures might be possible but we have data only for 50°C. Toluene: Behaves similarly to d-limonene but remains slightly cloudy at 50°C. Apiezon L grease can also be used to protect electrical contacts. Apiezon L grease can also be used to protect electrical contacts. The grease itself is of course an insulator, however, the grease film on a contact is so thin at the actual point of contact that it just does not interfere with the passage of electrical current except for the smallest of voltages. To further clarify this point, Apiezon L has an electrical strength of 720 volts per mil (0.001/25 µm). In a metal to metal contact the film of grease would be only of the order of 0.00001/0.25 µm) or less, giving an electrical strength of only 7 volts. For contacts operating at high temperatures, use Apiezon T. Trace element analysis: Apiezon L grease is known for its low levels of trace elements.

Apiezon M Economical High-Vacuum Lubricant 2x10-9 Torr at 20°C, Silicone & Halogen Free, 25 G Tube Apiezon Type M Vacuum Grease is a good and economical high-vacuum grade lubricant. Initial pump down characteristics, at room temperature, are excellent. This is clearly the world's most widely used vacuum grease in electron microscope laboratories including use in both the electron microscope itself and the ancillary vacuum evaporator equipment. However, being completely hydrocarbon based completely free of silicones and halogens, there is some contribution to column contamination. Vapor pressure 2x10-9 torr at 20° C. Not intended for use where temperatures exceed 30° C. Apiezon L and M greases have strong powers of absorption, particularly for other hydrocarbon molecules due to their complex hydrocarbon structure and very high molecular weight. They are frequently used as the stationary phase in gas chromatography. Apiezon greases L and M have been especially formulated to provide excellent lubrication while maintaining an efficient gas seal and are widely used in the manufacture and servicing of high performance vacuum pumps. Apiezon vacuum greases have gained many prestigious approvals. Apiezon L grease, for example, is approved by The European Space Agency, Matra Marconi, NASA and NATO, while M grease is approved by NATO and N grease is approved by NASA and the US Navy.

Apiezon M Economical High-Vacuum Lubricant 2x10-9 Torr at 20°C, Silicone & Halogen Free, 100 G Tube Apiezon Type M Vacuum Grease is a good and economical high-vacuum grade lubricant. Initial pump down characteristics, at room temperature, are excellent. This is clearly the world's most widely used vacuum grease in electron microscope laboratories including use in both the electron microscope itself and the ancillary vacuum evaporator equipment. However, being completely hydrocarbon based completely free of silicones and halogens, there is some contribution to column contamination. Vapor pressure 2x10-9 torr at 20° C. Not intended for use where temperatures exceed 30° C. Apiezon L and M greases have strong powers of absorption, particularly for other hydrocarbon molecules due to their complex hydrocarbon structure and very high molecular weight. They are frequently used as the stationary phase in gas chromatography. Apiezon greases L and M have been especially formulated to provide excellent lubrication while maintaining an efficient gas seal and are widely used in the manufacture and servicing of high performance vacuum pumps. Apiezon vacuum greases have gained many prestigious approvals. Apiezon L grease, for example, is approved by The European Space Agency, Matra Marconi, NASA and NATO, while M grease is approved by NATO and N grease is approved by NASA and the US Navy.

Apiezon N Cryogenic Down to 4 Kelvin High Vacuum Grease With Vapor Pressure of 5x10-9 Torr at 20°C, Silicone & Halogene Free, 25 G Tube When it comes to low temperature applications, nothing comes close in performance to Apiezon N Grease. The product retains most of its important properties all the way down to -269°C/-452°F/4°K. But this is not all. This innovative new lubricant solution to those low temperature challenges can also be cycled from these low temperatures up to room temperature and then back down without showing visible signs of cracking. And in addition, this grease is completely free of any silicones or halogens. Apiezon N grease has a special proprietary additive that reduces (or eliminates) cracking and crazing when the grease is cooled (or even quenched) to the cryogenic temperatures already mentioned above. This helps ensure that as a thermal contact medium, maximum contact between the surfaces is conferred by the grease, ensuring maximum thermal conductance. All these advantages are additional of course, to the primary purpose of the product, that is, to ensure a leak free seal. Extensive additional technical information is available including vapor pressure vs. temperature data. Apiezon N is also used as an electrical contact grease (lubricant). These Apiezon N Cryogenic High Vacuum Grease are packaged in a 25 gram tube and are for use with vacuum O-rings and joints used in cryogenic vacuum applications.

Apiezon Q Compound Vacuum Sealing Compound Apiezon Sealing Compound Q is a versatile sealing medium which is used for a variety of different purposes in a number of different industries. It is sufficiently firm at room temperature to remain in position, yet is soft enough to be molded by hand and is readily removed when no longer required. The key features of this product are: Temporary seal, Low vacuum range only, Versatile, and Easy to use. Apiezon Sealing Compound Q exhibits good vacuum properties in the lower vacuum range. Among many other diverse applications, Apiezon Sealing Compound Q can be used to seal around the edges of flat, unground joints to blank off parts of an apparatus temporarily or to seal glass cylinders to metal plates to produce temporary vacuum enclosures. Whether sealing joints, filling in holes or filling gaps in a vacuum system, Apiezon Sealing Compound Q is extremely versatile and is the ideal leak sealant in a wide array of uses and industries. Apiezon Q Compound Vacuum Sealing Compound has the follow properties: typical working temperature range -10 to + 30 °C, ambient temperature for application, approximate softening point 40-50 °C, 1 kg packaging, and vapor pressure 1x10-4 Torr @ 20°C.

Apiezon T Medium Temperature Vacuum Grease, Silicone Free, 25 Gram Tube Apiezon Grease, Type T is designed more as a medium temperature and stopcock grease and for other general lubrication requirements. It is guaranteed to be silicon free. The vapor pressure is 5x10-9 torr at 20° C. The maximum recommended use temperature if 120° C. This would not be the recommended choice for use in an electron optical column (one should use Type M or Type L). The key features of this product are the following: Medium temperature range (10° C to 120° C), Good sticking power, Low to medium vacuum range, and Non-silicone based. Apiezon T grease is specifically recommended fore sealing and lubrication in medium temperature applications, but not for highly stressed bearings. A high molecular weight polymeric additive gives Apiezon T grease a tenacious consistency and provides extra cushioning between mated surfaces. By absorbing vibrations in equipment, Apiezon T grease is invaluable in fragile glass to glass joints which continually risk fracture. Apiezon T grease is a very tenacious grease conferring excellent cohesive strength. Mated joints when joined together stay together, ensuring an efficient gas tight seal. At its higher operating temperature range, Apiezon T grease exhibits good vacuum properties in the lower to medium vacuum range, while at lower temperatures it can be used in the high vacuum range.

Apiezon AP100 Ultra High Vacuum Lubricating Grease, 10-10 Torr at 20°C, Silicone Free, 50 Gram Tube With a vapor pressure of lower than 10-10 Torr at 20°C (68°F), Apiezon AP 100 is a lubricating grease designed for use with equipment present within ultra high vacuum systems. The key feature of AP 100 are that Apiezon AP 100 exhibits extremely high levels of lubricity. Indeed, with a lubricity 4 Ball Test value of 450 kg, it provides eight times the level of lubrication offered by conventional petroleum based lubricating greases. Apiezon AP 100 is thus ideal for use in stepping motors and gearboxes where it affords protection against abrasion and corrosion, particularly under high load conditions. It can also be used to prevent the seizure of glass joints, stopcocks and taps or the corrosion of small metal fastenings. Apiezon AP 100 is formulated for use at ambient temperature. For higher temperature applications, Apiezon AP 101 or Apiezon H grease will provide more suitable alternatives.

Apiezon AP101 Anti Seize Vacuum Grease 10-5 Torr at 20°C, Silicone Free, 50 Gram Tube The key features of Apiezon AP 101 include the following: anti-seize properties, critical lubricant, non-silicone based, contains micronized particles of PTFE, solvent/chemical resistance, and wide temperature range. Apiezon AP 101 contains PTFE which confers superior anti-seize properties providing long-lasting lubrication and ensuring smooth operation of stop cocks and taps. Coupled with easy separation of ground or polished glass joints, Apiezon AP 101 is an excellent general purpose grease for laboratory use. The value of Apiezon AP 101 anti-seize properties are not limited to laboratory or glassware use, but are equally effective when used on metal equipment which may be subject to seizure or corrosion. A small amount of Apiezon AP 101 on fasteners which, when exposed to corrosive environments normally jam solid, will be protected thus allowing them to be effortlessly removed. Apiezon AP 101 is an excellent general purpose grease for sealing joints and is ideal for use in critical lubrication conditions such as highly stressed bearings. It can be used over a very wide range of temperatures, possessing its optimum consistency over the -15 to + 150 °C (+5 to 302 °F) temperature range, but is usable down to -40 °C (-40 °F) and for limited periods, up to + 180 °C (356 °F).

Apiezon Wax W Hard Vacuum Sealing, Softening Point 85°C, 5x10-9 Torr at 20°C, Wax, 25 x 20g Sticks Apiezon waxes are versatile products offering a multitude of uses. The key features of Apiezon waxes are: Jointing media, Gettering qualities, Etch fluid resistant, Mounting media, and Low to medium vacuum range. An Apiezon wax being a solid at ambient temperatures is ideal for use where a rigid permanent or semi-permanent sealed joint is required. Apiezon waxes are equally effective at maintaining seals in vacuum systems down to 10-9 torr at 20°C (dependent on the wax) and in systems at small positive pressures. They are excellent waterproof mediums providing a total seal against liquid water and offer superior sealing against water vapour and atmospheric moisture. The excellent vapour pressure characteristics, as shown in the graph opposite, are extremely important for a variety of applications, including thin film deposition as volatiles will not jeopardise the vacuum within the system or contaminate thin film deposits. Like the greases, Apiezon waxes have powerful gettering qualities. This gettering power coupled with high purity and very clean meltdown properties of the waxes has led to their extensive use in the electronics industry, where scrupulous cleanliness of metal surfaces is required. Apiezon waxes are used in the manufacture of silicon transistors and integrated circuits. They are chemically inert, being resistant to etching fluids such as hydrofluoric acid, nitric acid and acetic acid, but are easily removed with hydrocarbon or chlorinated solvents. Many impurities which may have remained on the surface if a solvent were used in isolation are also removed with the wax. Apiezon waxes are extensively used as protective coatings for printed circuits, ensuring complete protection for the copper circuit from acid etching processes and air oxidation, while enabling direct soldering through the wax. Apiezon waxes are excellent mounting media and are used extensively as both temporary and permanent adhesives for the mounting of silicon chips. To use as a mounting medium, either melt the wax and apply neat to the surface, or dissolve in a hydrocarbon or chlorinated solvent prior to use. Evaporation of the solvent will leave a thin layer of wax with excellent adhesive properties. To ensure an adhesive layer of consistent thickness across its surface rapidly rotate the chip and a superior mounting surface will be created. How to use Apply pre-melted wax to the required area using a glass rod, spatula or other such implement, taking care not to exceed a temperature of 60°C above the softening point of the wax shown above. To remove the wax after use heat to soften and scrape away. Any deposits can then be washed with an organic solvent or removed using a vapour degreasing bath. Apiezon Wax W is the first choice wax for most situations, offering efficient joint sealing over the widest temperature range, the most resistance to attack by acids and alkalis, the lowest vapour pressures, the most resistance to water and, for such a versatile wax, surprisingly the lowest cost when presented in the 1kg block. Wax W is also available in 20g sticks offering faster application. A single stick being simply heated at the site of application with a small blow torch or Bunsen burner.

Apiezon Wax W Hard Vacuum Sealing, Softening Point 85°C, 5x10-9 Torr at 20°C, Wax, 1 kg block Apiezon waxes are versatile products offering a multitude of uses. The key features of Apiezon waxes are: Jointing media, Gettering qualities, Etch fluid resistant, Mounting media, and Low to medium vacuum range. An Apiezon wax being a solid at ambient temperatures is ideal for use where a rigid permanent or semi-permanent sealed joint is required. Apiezon waxes are equally effective at maintaining seals in vacuum systems down to 10-9 torr at 20°C (dependent on the wax) and in systems at small positive pressures. They are excellent waterproof mediums providing a total seal against liquid water and offer superior sealing against water vapour and atmospheric moisture. The excellent vapour pressure characteristics, as shown in the graph opposite, are extremely important for a variety of applications, including thin film deposition as volatiles will not jeopardise the vacuum within the system or contaminate thin film deposits. Like the greases, Apiezon waxes have powerful gettering qualities. This gettering power coupled with high purity and very clean meltdown properties of the waxes has led to their extensive use in the electronics industry, where scrupulous cleanliness of metal surfaces is required. Apiezon waxes are used in the manufacture of silicon transistors and integrated circuits. They are chemically inert, being resistant to etching fluids such as hydrofluoric acid, nitric acid and acetic acid, but are easily removed with hydrocarbon or chlorinated solvents. Many impurities which may have remained on the surface if a solvent were used in isolation are also removed with the wax. Apiezon waxes are extensively used as protective coatings for printed circuits, ensuring complete protection for the copper circuit from acid etching processes and air oxidation, while enabling direct soldering through the wax. Apiezon waxes are excellent mounting media and are used extensively as both temporary and permanent adhesives for the mounting of silicon chips. To use as a mounting medium, either melt the wax and apply neat to the surface, or dissolve in a hydrocarbon or chlorinated solvent prior to use. Evaporation of the solvent will leave a thin layer of wax with excellent adhesive properties. To ensure an adhesive layer of consistent thickness across its surface rapidly rotate the chip and a superior mounting surface will be created. How to use Apply pre-melted wax to the required area using a glass rod, spatula or other such implement, taking care not to exceed a temperature of 60°C above the softening point of the wax shown above. To remove the wax after use heat to soften and scrape away. Any deposits can then be washed with an organic solvent or removed using a vapour degreasing bath. Apiezon Wax W is the first choice wax for most situations, offering efficient joint sealing over the widest temperature range, the most resistance to attack by acids and alkalis, the lowest vapour pressures, the most resistance to water and, for such a versatile wax, surprisingly the lowest cost when presented in the 1kg block. Wax W is also available in 20g sticks PN (P102550) offering faster application. A single stick being simply heated at the site of application with a small blow torch or Bunsen burner.

Apiezon Wax W40 Softest Vacuum Sealing, Softening Point 45°C, 6x10-8 Torr at 20°C, Wax, Apiezon waxes are versatile products offering a multitude of uses. The key features of Apiezon waxes are: Jointing media, Gettering qualities, Etch fluid resistant, Mounting media, and Low to medium vacuum range. An Apiezon wax being a solid at ambient temperatures is ideal for use where a rigid permanent or semi-permanent sealed joint is required. Apiezon waxes are equally effective at maintaining seals in vacuum systems down to 10-9 torr at 20°C (dependent on the wax) and in systems at small positive pressures. They are excellent waterproof mediums providing a total seal against liquid water and offer superior sealing against water vapour and atmospheric moisture. The excellent vapour pressure characteristics, as shown in the graph opposite, are extremely important for a variety of applications, including thin film deposition as volatiles will not jeopardise the vacuum within the system or contaminate thin film deposits. Like the greases, Apiezon waxes have powerful gettering qualities. This gettering power coupled with high purity and very clean meltdown properties of the waxes has led to their extensive use in the electronics industry, where scrupulous cleanliness of metal surfaces is required. Apiezon waxes are used in the manufacture of silicon transistors and integrated circuits. They are chemically inert, being resistant to etching fluids such as hydrofluoric acid, nitric acid and acetic acid, but are easily removed with hydrocarbon or chlorinated solvents. Many impurities which may have remained on the surface if a solvent were used in isolation are also removed with the wax. Apiezon waxes are extensively used as protective coatings for printed circuits, ensuring complete protection for the copper circuit from acid etching processes and air oxidation, while enabling direct soldering through the wax. Apiezon waxes are excellent mounting media and are used extensively as both temporary and permanent adhesives for the mounting of silicon chips. To use as a mounting medium, either melt the wax and apply neat to the surface, or dissolve in a hydrocarbon or chlorinated solvent prior to use. Evaporation of the solvent will leave a thin layer of wax with excellent adhesive properties. To ensure an adhesive layer of consistent thickness across its surface rapidly rotate the chip and a superior mounting surface will be created. How to use Apply pre-melted wax to the required area using a glass rod, spatula or other such implement, taking care not to exceed a temperature of 60°C above the softening point of the wax shown above. To remove the wax after use heat to soften and scrape away. Any deposits can then be washed with an organic solvent or removed using a vapour degreasing bath. Apiezon Wax W40 is softer than the Apiezon Wax W100 and Wax W, thus reducing the risk of cracking glass joints if they are subject to vibration. Wax W40 is the softest of all the Apiezon waxes. With a melting point of 45°C, it can be prepared for use in hot water for application to heat sensitive joints.

Apiezon Wax W100 Softer Hard Vacuum Sealing, Softening Point 55°C, 5x10-9 Torr at 20°C, Wax, 250g Apiezon waxes are versatile products offering a multitude of uses. The key features of Apiezon waxes are: Jointing media, Gettering qualities, Etch fluid resistant, Mounting media, and Low to medium vacuum range. An Apiezon wax being a solid at ambient temperatures is ideal for use where a rigid permanent or semi-permanent sealed joint is required. Apiezon waxes are equally effective at maintaining seals in vacuum systems down to 10-9 torr at 20°C (dependent on the wax) and in systems at small positive pressures. They are excellent waterproof mediums providing a total seal against liquid water and offer superior sealing against water vapour and atmospheric moisture. The excellent vapour pressure characteristics, as shown in the graph opposite, are extremely important for a variety of applications, including thin film deposition as volatiles will not jeopardise the vacuum within the system or contaminate thin film deposits. Like the greases, Apiezon waxes have powerful gettering qualities. This gettering power coupled with high purity and very clean meltdown properties of the waxes has led to their extensive use in the electronics industry, where scrupulous cleanliness of metal surfaces is required. Apiezon waxes are used in the manufacture of silicon transistors and integrated circuits. They are chemically inert, being resistant to etching fluids such as hydrofluoric acid, nitric acid and acetic acid, but are easily removed with hydrocarbon or chlorinated solvents. Many impurities which may have remained on the surface if a solvent were used in isolation are also removed with the wax. Apiezon waxes are extensively used as protective coatings for printed circuits, ensuring complete protection for the copper circuit from acid etching processes and air oxidation, while enabling direct soldering through the wax. Apiezon waxes are excellent mounting media and are used extensively as both temporary and permanent adhesives for the mounting of silicon chips. To use as a mounting medium, either melt the wax and apply neat to the surface, or dissolve in a hydrocarbon or chlorinated solvent prior to use. Evaporation of the solvent will leave a thin layer of wax with excellent adhesive properties. To ensure an adhesive layer of consistent thickness across its surface rapidly rotate the chip and a superior mounting surface will be created. How to use Apply pre-melted wax to the required area using a glass rod, spatula or other such implement, taking care not to exceed a temperature of 60°C above the softening point of the wax shown above. To remove the wax after use heat to soften and scrape away. Any deposits can then be washed with an organic solvent or removed using a vapour degreasing bath. Wax W100 is inherently softer than Wax W, thus reducing the risk of cracking glass joints if they are subject to vibration. Wax W40 is the softest of all the Apiezon waxes. With a melting point of 45°C, it can be prepared for use in hot water for application to heat sensitive joints.

Apiezon J Vacuum Sealing Oil, Moderate Viscosity - Low Vapor Pressure Oil, 500 ml. PN J-Oil-500ml. Apiezon J Vacuum Sealing oil is used in situations were moderate viscosity and low vapor pressures are required. For properties of Apiezon J Oil click graphic at far right above. See MSDS for uses below at AVAILABLE DOWNLOADS:

Apiezon K Vacuum Sealing Oil, Moderate Viscosity - Low Vapor Pressure Oil, 500 ml. PN K-Oil-500ml. Apiezon K Vacuum Sealing oil is used in situations were moderate viscosity and low vapor pressures are required. For properties of Apiezon K Oil click graphic at far right above. See MSDS for uses below at AVAILABLE DOWNLOADS: