Clearco Products

3430 G Progress Drive - Bensalem, PA 19020 - Telephone: 1-800-533-5823 U.S. & Canada 215-639-2640 International: 1-011-215-639-2640 Fax: 215-639-2919

Products Description: Clearco Phenylmethyl fluids are phenyl-based silicones that are formulated for applications where Dimethyl silicones (polydimethylsiloxane) will not remain stable. These fluids are described as aromatic siloxanes due to the presence of phenyl groups. High phenyl content fluids (PM-125 & PPM-500) are utilized as heat exchange fluids, dielectric coolants, and base oils for high temperature fluids. Low phenyl content fluids (PM-50 & PM-500) can be utilized for similar applications, but are also be used at lower temperatures than higher phenyl content fluids. Applications for Low phenyl content fluids include wide temperature range baths, low temperature baths, and fluids for sensitive timing and calibration devices.

Phenyl-based silicones replace methyl groups with phenyl groups. With the introduction of phenyl groups into the polysiloxane, oxidation resistance, thermal stability and shear resistance are enhanced. At elevated temperatures, phenyl-based silicones are more stable and resistant to thermal and oxidizing attack. In addition, refractive index is increased, making them suitable fluids where the RI matches that of optical fibers, allowing for invisible connections and transparent blends.

PM-50 & PM-500 offer a wide operating temperature range.

Synonyms: phenylmethyl silicone, phenyl silicone, , thermal silicones, high temperature silicone, clear high temperature silicones, Dow Corning® 510 & Dow Corning® 510, Dow Corning® 550, & Dow Corning® 550 Fluids, Shinetsu KF-965, Shinetsu KF965 silicone, Shinetsu KF-54, KF 54, high phenyl content silicone, high temperature bath fluid, clear high temp bath fluid, odorless high temperature bath fluid, 250C stability fluid, CAS# 63148-52-7, CAS 63148-52-7, high temperature silicone bath fluid, phenyl silicone bath fluid, high shear phenyl silicone, high dielectric phenyl silicone, high water repellent phenyl silicone, , phenyl heat exchange fluid, thermal silicone, thermal silicone fluids, high refractive index silicone, heating bath silicone, 250C heating bath silicone, heat transfer silicone, phenyl silicone for heat transfer, low compressibility silicone, low compressibility phenyl silicone, aromatic silicone, high oxidation resistance silicone, phenyl dielectric coolant, phenylmethyl-dimethyl silicone.

PM-50 & PM-500 Phenylmethyl Silicone Phenylmethylsiloxane

Dimethylsiloxane copolymers (CAS #63148-5207)

Phenylmethylsiloxane content: 8 to 12%

Typical Properties: Wide temperature range stability, high thermal stability, high resistance to oxidation resistance, high resistance to shear, enhanced metal to metal lubricity

Operating Temperature Range: -60șC to 205șC (open system), -60șC to 260șC (closed system)

Gel time @ 250șC (open system): 220 to 260 hours (PM-50) & 180 to 200 hours (PM-500)

Product Equivalent: Dow Corning 510 Fluid, 50 cs & Dow Corning 510 Fluid, 500 cs

Use: Clearco PM-50 & PM-500 are Phenylmethylsiloxane-Dimethylsiloxane copolymers CAS [63148-52-7]. They are formulated to have enhanced thermal stability over standard polydimethylsiloxane fluids, which break down at temperatures of 160C open system. PM-50 will remain stable at @250C for 220 to 260 hours (open system). PM-500 will remain stable at @250C for 180 to 200 hours (open system). In closed systems, their stability is significantly higher. Due to its high temperature stability, Clearco PM 125 is recommended for high-temp bath applications and for high temperature heat transfer applications

For baths that require stability at both high and low temperatures, the PM-50 & 500 are excellent fluids. They have pour points of –70C, enabling them to be used as bath fluids for applications ranging from –70șC to 260șC

In addition, Clearco Phenylmethyl Silicones exhibit higher oxidation resistance, greater thermal stability and better shear resistance than standard polydimethylsiloxane silicones. Other applications include: Damping Fluid –High Temperature Bath Fluid –Hydraulic Fluid – Calibrations Fluid, Timing Device Fluid, Heat Transfer Fluid.

PM-50 & PM-500 possesses high dielectric strength, making it very useful as a dielectric coolant, dielectric bath fluid, and high temperature ultrasonic coupler.

Features & Benefits:

  • Wide Temperature Range: -70șC to 260șC
  • High Temperature Bath Fluid for laboratory research apparatus and instruments
  • Low Temp Performance
  • Low temp fluid for timing and meter devices
  • High Temperature Bath Fluid
  • Enhanced Lubrication
  • Non-Flammable
  • Enhanced Resistance to Shear
  • High Oxidation Resistance
  • High Temperature Heat Transfer Applications
  • High Temperature Fluids for Gauges
  • Dielectric Coolant

Availability: 5-gallon pails & 200kg drums

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PM-125 is a high content phenylmethyl silicone that offers stability at 250șC.

Synonyms: phenylmethyl silicone, phenyl silicone, , thermal silicones, high temperature silicone, clear high temperature silicones, Dow Corningź 550, & Dow Corningź 550 Fluids, GE SF1154, Shinetsu KF-54, KF 54, high phenyl content silicone, high temperature bath fluid, clear high temp bath fluid, odorless high temperature bath fluid, 250C stability fluid, CAS# 63148-52-7, CAS 63148-52-7, high temperature silicone bath fluid, phenyl silicone bath fluid, high shear phenyl silicone, high dielectric phenyl silicone, high water repellent phenyl silicone, , phenyl heat exchange fluid, thermal silicone, thermal silicone fluids, high refractive index silicone, heating bath silicone, 250C heating bath silicone, heat transfer silicone, phenyl silicone for heat transfer, low compressibility silicone, low compressibility phenyl silicone, aromatic silicone, high oxidation resistance silicone, phenyl dielectric coolant, phenylmethyl-dimethyl silicone.

PM-125 Phenylmethyl Silicone Phenylmethylsiloxane

Dimethylsiloxane copolymers (CAS #63148-5207)

Phenylmethylsiloxane content: 48 to 52%

Typical Properties: Wide temperature range stability, high thermal stability, high resistance to oxidation resistance, high resistance to shear, enhanced metal to metal lubricity

Operating Temperature Range: -40șC to 230șC (open system), -40șC to 290 șC (closed system)

Gel time @ 250șC: 1,000 to 1,400 hours (open system)

Product Equivalent: Dow Corning 550 Fluid, offset: GE SF1154 & Shinetsu KF-54    
Comparison Chart with DC 550 & GE SF 1154

Use: Clearco PM-125 is a Phenylmethylsiloxane-Dimethylsiloxane copolymers CAS [63148-52-7]. It is formulated to have enhanced thermal stability over standard polydimethylsiloxane fluids, which break down at temperatures of 160C open system. PM-1250 will remain stable at @250C for 1,000 to 1,400 hours (open system). In closed systems, its stability is significantly higher. Due to its high temperature stability, Clearco PM-125 is recommended for high-temp bath applications and for high temperature heat transfer applications.

In addition, Clearco PM-125 contains 48 to 52% phenyl content. It exhibits higher oxidation resistance, greater thermal stability and better shear resistance than lower content phenyl silicones. Other applications include: Damping Fluid –High Temperature Bath Fluid –Hydraulic Fluid, Calibrations Fluid, Timing Device Fluid, Heat Transfer Fluid.

PM-125 possesses high dielectric strength, making it very useful as a dielectric coolant, dielectric bath fluid, and high temperature ultrasonic coupler.

Features & Benefits:

  • Wide Temperature Range: -51șC to 260șC
  • High Temp Performance
  • Low Temp Performance
  • Low temp fluid for timing and meter devices
  • High Temperature Bath Fluid for laboratory research apparatus and instruments
  • Enhanced Metal to Metal lubricity
  • Excellent Heat Transfer Fluid
  • Non-Flammable
  • Enhanced Resistance to Shear
  • High Oxidation Resistance
  • High Temperature Heat Transfer Applications
  • High Dielectric Strength – use in capacitors and various applications

Availability: 5-gallon pails & 55-gallon drums (220kg)

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PPM-500 provides the highest thermal stability in both open and closed system.

Synonyms: phenylmethyl silicone, phenyl silicone, thermal silicones, high temperature silicone, clear high temperature silicones, Phenylmethylsiloxane homopolymer Dow Corning® 710 & DC® 710, Dow Corning® 710 bath fluid, high phenyl content silicone, high temperature bath fluid, clear high temp bath fluid, odorless high temperature bath fluid, 250C stability fluid, CAS #9005-12-3, CAS# 63148-52-7, CAS 63148-52-7, CAS# 63148-58-3high temperature silicone bath fluid, phenyl silicone bath fluid, high shear phenyl silicone, high dielectric phenyl silicone, high water repellent phenyl silicone, , phenyl heat exchange fluid, thermal silicone, thermal silicone fluids, high refractive index silicone, heating bath silicone, 250șC heating bath silicone, heat transfer silicone, phenyl silicone for heat transfer, low compressibility silicone, low compressibility phenyl silicone, aromatic silicone, high oxidation resistance silicone, phenyl dielectric coolant, phenylmethyl-Dimethyl silicone

PPM-500 Phenylmethyl Silicone Poly-Phenylmethylsiloxane, Phenylmethylsiloxane [CAS #9005-12-3]

Dimethylsiloxane copolymers (CAS #63148-5207)

Phenylmethylsiloxane content: 100%

Typical Properties: Highest thermal stability, high resistance to oxidation, high resistance to shear, enhanced metal to metal lubricity

Operating Temperature Range: 0șC to 260șC (open system), 0șC to 315șC (closed system)

Gel time @ 250șC: 1,500 to 2,000 hours (open system)

Product Equivalent: Dow Corning 710 & CAS# 63148-58-3     
View Comparison Chart with DC 710 Fluid

Use: Clearco PPM-500 is a 100% Phenylmethylsiloxane CAS [9005-12-3]. It is formulated to have the highest level of thermal stability. PPM-500 will remain stable at @250șC for 1,500 to 2,000 hours (open system). In closed systems, its stability is significantly higher. Due to its high temperature stability, Clearco PPM-500 is recommended for high-temp bath applications and for high temperature heat transfer applications.

Clearco PPM-500 contains 100% phenyl content. It exhibits higher oxidation resistance, greater thermal stability and better shear resistance than lower content phenyl silicones. Other applications include: Damping Fluid –High Temperature Bath Fluid –Hydraulic Fluid, Calibrations Fluid, Timing Device Fluid, Heat Transfer Fluid.

PPM-500 possesses high dielectric strength, making it very useful as a dielectric coolant, dielectric bath fluid, and high temperature ultrasonic coupler.

Features & Benefits:

  • Temperature Range: -201șC to 290șC
  • High Temp Performance
  • High Temperature Bath Fluid for laboratory research apparatus and instruments
  • Enhanced Metal to Metal lubricity
  • Non-Flammable
  • Enhanced Resistance to Shear
  • High Oxidation Resistance
  • High Temperature Heat Transfer Applications
  • High Refractive Index
  • Enhanced Metal to Metal lubricity
  • Excellent Heat Transfer Fluid
  • Non-Flammable
  • High Dielectric Strength – use in capacitors and various applications

Availability: 10kg pails (2.5 gallons)

View Product Specs

View Silicones Library