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KJLC Silicone Pump Fluids



KJLC 704-T Diffusion Pump
Oil For Harsh Environments
Users of diffusion pumps for harsh processes or in non-optimized vacuum systems may be seeing crystallization of solids in their pump fluid, learn more.
Product Downloads
For a downloadable datasheet on this product, please click here.
Fluids FAQ
Click here for answers to some of the most common questions we get asked.
Contact Us
To speak with someone directly, please call +1 412 387 9200 or email international@lesker.com.

Specifications Table

Type
KJLC 704
KJLC 704-T
KJLC 705
Flash Point
220°C (Open Cup)
220°C (Open Cup)
243°C (Open Cup)
Boiling Point
@0.06 Torr (°C): 223
@0.06 Torr (°C): 210
@0.06 Torr (°C): 245
Specific Gravity
@25°C: 1.10 (g/cc)
@25°C: 1.07 (g/cc)
@25°C: 1.09 (g/cc)
Viscosity
@25°C, 46
@25°C, 37
@25°C, 165-185
Ultimate Vacuum (Torr)
Untrapped: 10-7 to 10-8
Trapped: to 10-11
Untrapped: 10-7 to 10-8
Trapped: to 10-11
Untrapped: 10-9 to 10-10
Trapped: to 10-11
Surface Tension
37.5 (dynes/cm)
37.3 (dynes/cm)
36.5 (dynes/cm)
Molecular Weight
484
490
546
Extrapolated Vapor Pressure
(Torr)
@25°C: 8.4 x 10-8
@25°C: 8.4 x 10-8
@25°C: 3 x 10-10
Typical Boiler Temp.
230
230
248 to 265
Heat of Vaporization
22.0/200°C (kcal/g mole)
22.0/200°C (kcal/g mole)
28.2/250°C (kcal/g mole)
Molecular Description
Tetamethyl Tetraphenyl Trisiloxane
Tetamethyl Tetraphenyl Trisiloxane
Pentaphenyl Trimethyl Trisiloxane

Ordering Table

All dimensions listed below, unless otherwise stated, are in grams.

Description Size Weight Part No. Price Add
To Cart
Description Size Weight Part No. Price Add
To Cart
KJLC 704 
 500 cc 
 2.4 lbs. 
704BB $84.00
KJLC 704 
 1 gallon 
 8.5 lbs. 
704CA P.O.R.
KJLC 704-T 
 1 gallon 
 8.5 lbs. 
704CA-T P.O.R.
KJLC 705 
 500 cc 
 2.4 lbs. 
705BB $150.00
KJLC 705 
 1 gallon 
 8.5 lbs. 
705CA $805.00