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Diffusion pump fluids

Diffusion pump fluids including Diffoil-20, Apiezon, Edwards, Silicone oils and Santovac5 oils.

All prices exclude VAT.
Name & Code
Grouped product items
Code & Description Availability Price Qty
AGB7246
Apiezon Oil AP201 (4 Litres)
Average lead time: 12 days
Average lead time: 12 days
POA
POA
AGB7634
Edwards L9 Diffusion Pump Oil (1 Litre)
Average lead time: 5 days
Average lead time: 5 days
POA
POA
AGB7288
Silicone 704 Oil 500ml SS
Average lead time: 19 days
Average lead time: 19 days
POA
POA
AGB7242
KJLC 704 Silicone Fluid (500ml)
In Stock
In Stock
POA
POA
AGB7289
Santovac 5 Oil (100ml)
Average lead time: 12 days
Average lead time: 12 days
POA
POA
AGB7290
Santovac 5 Oil 500ml
Average lead time: 19 days
Average lead time: 19 days
POA
POA
Product Description

Diffoil-20 Ultra is a double-distilled, high-grade, hydrocracked oil and is ideal for use in diffusion pumps but can also be used in two-stage rotary vane pumps. It allows low ultimate pressures and suits the very clean systems required in optical coating, sputter and e-beam coating, and analytical instrumentation.

Apiezon AP-201 is based on a hydrocarbon oil but unlike other Apiezon hydrocarbon oils it is strongly resistant to oxidation.

Edwards L9 diffusion pump fluid is a naphthalene based synthetic material which is ideal for use in applications where silicone forming insulating films cannot be tolerated.

Silicone oil
Silicone oils are in wide use in vacuum systems but should be avoided in electron microscopes as an insulating layer may be formed in critical parts of the column.

Santovac® 5 oil
For some applications, a diffusion pump oil with exceptionally low vapour pressure may be necessary. One such oil is Santovac 5, a polyphenyl ether. It has exceptional thermal stability and a lower tendency to creep than other oils. If this oil is to replace a dissimilar oil, the diffusion pump must be thoroughly cleaned to ensure that it is free of the old oil before charging with Santovac.

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