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Oils & Silicones

SIL5 Silicone Oil, silicon, polymerized siloxanes (clear) 350 cst

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Silicone is a man-made chemical that is put to use in a staggering number of industries and applications.

350 cst


Silicone oils (polymerized siloxanes) are silicon analogues of carbon based organic compounds, and can form (relatively) long and complex molecules based on silicon rather than carbon. Chains are formed of alternating silicon-oxygen atoms (...Si-O-Si-O-Si...) or siloxane, rather than carbon atoms (...C-C-C-C...). Other species attach to the tetravalent silicon atoms, not to the divalent oxygen atoms which are fully committed to forming the siloxane chain. A typical example ispolydimethylsiloxane, where two methyl groups attach to each silicon atom to form (H3C)[SiO(CH3)2]nSi(CH3). The carbon analogue would be an alkane, e.g. dimethylpropane C5H12 or (H3C)[C(CH3)2](CH3).

Silicone oils could be a basis for silicon-based organic life, but their more prosaic, primary uses are as lubricants orhydraulic fluids. They are excellent electrical insulators and, unlike their carbon analogues, are non flammable. Their temperature-stability and good heat-transfer characteristics make them widely used in laboratories for heating baths ("oil baths") placed on top of hotplate stirrers. Silicone oil is also commonly used as the working fluid in diffusion pumps.

Some silicone oils such as simethicone are potent anti-foaming agents. They are used in industrial applications such asdistillation or fermentation where excessive amounts of foam can be problematic. They are sometimes added to cooking oils to prevent excessive frothing during deep frying. Consumer products to control flatus (antiflatulents) often contain silicone oil. Silicone oils used as lubricants can be inadvertent defoamers (contaminants) in processes where foam is desired, such as in the manufacture of polyurethane foam. Silicone oils have been used as a vitreous fluid substitute to treat difficult cases of retinal detachment, such as those complicated with proliferative vitreoretinopathy, giant retinal tears, and penetrating ocular trauma. Silicone oil is also one of the two main ingredients in Silly Putty, along with boric acid.

Silicone is a man-made chemical that is put to use in a staggering number of industries and applications.

The most important features of this fluid include:

• Little change in physical properties over a wide temperature range.

• The fluid can be used from -40°C to 280°C.

• Excellent water repellency.

• Low surface tension. The fluid readily wets clean surfaces to impart waterrepellency and release characteristics.

• Low toxicity.


1.         As a release agent. Used purely or as a part of a compounded formula PCC Silicone oil provides a non-toxic, non-carbonising mould release for rubber, plastics and metal die-castings.

2.         As an Anti-Foam agent. Very small quantities of the fluid are very effective as a foam control agent, especially innon aqueous systems.

3.         As a mechanical fluid. The very high viscosity-index, the thermal and chemical stability, shear-breakdown resistance and the rubber compatibility as well as the compressibility make this fluid outstanding for mechanical and hydraulic uses.

4.         As a lubricant. The fluid provides excellent lubricating properties for most plastic and elastomeric surfaces. Lubricity with metals depends upon the possible combinations such as P.T.F.E., MoS2 and other lubricity improvers.

5.         In polishes and chemical specialities. Silicone oil is used in most automobile and furniture polishes for its ease of application, high gloss with a minimum rubbing and durable water repellent film.

6.         In electrical and electronic equipment. Because of the excellent dielectric properties silicone oil is widely used as an insulating and damping fluid.

Product ID: 6290
Stock code: SIL5
Part code: 5055614903839
Part number: 5055614903839
ISBN: 5055614903839
Condition: New
Brand: Bonnymans
Categories: Chemicals   Oils & Silicones  
Weight: 1kgs
Product TypeShipping CostDetails
UK Mainland - Non Hazardous Package £8.00 Delivery to mainland UK only - Up to 25kg on Non Hazardous Products
UK Mainland - Hazardous Package £9.50 to £12.00

Delivery to mainland UK only - Up to 25kg on Hazardous Products. Prices From £9.50-£12 (area dependant) Click Here For Chart


UK Mainland - Non Hazardous Pallet £35.00

Delivery to mainland UK only - Up to 1000 kg on Non Hazardous Products (1000 Litre IBC's, 205 litre Drums, 32 x 25 Litre etc)


UK Mainland - Hazardous Pallet

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Delivery to mainland UK only - Up to 1000 kg on Hazardous Products (1000 Litre IBC's, 205 litre Drums, 32 x 25 Litre etc) -Prices From £24 -£70 (area dependant) Click Here For Chart


Europe Click Here

Non Hazardous Shipping Rates For Most European Destinations


Please call for price Availability: 2961 in stock
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