Marsh Trees House Marsh Parade Newcastle-under-Lyme Staffordshire ST5 1BT United Kingdom Tel: +44 (0) 1782 622666 Fax: +44 (0) 1782 622655
Elastomers & Resins
Whitfield & Son Limited offer a full range of two component, room temperature cure silicone and polyurethane elastomers together with accompanying epoxy resin systems.
RTV Silicone Range
Our silicone rubber range exhibits the following advantages: - Easy processing with relatively inexpensive equipment - Low linear shrinkage - Good heat stability - High elongation and tear strength - Long shelf life - Excellent abrasion resistance - Low specific gravity giving higher volume of rubber per unit weight - Excellent reproduction of detail.
Applications
- Case moulds for the ceramic and allied industries - Printing pads - Decorative mouldings such as ceiling roses, cornices, figurines and candles - Metal casting, costume jewellery, decorative articles - Art, sculptures, masks, statues, special effects
Reproduction
Most synthetic and natural materials can be cast in our silicone rubber moulds: - Plaster - Polyester resins, polyurethane, epoxy resins - Concrete - Low melting point alloys - Silicone rubber
Polyurethane Rubber & Resin
Our polyurethane rubber and resin systems are particularly suited for the sanitaryware industry. Large moulds can be made using the advantages of rubber giving a flexible face while the bonding properties of the rubber enable adhesion to a more economical resin and filler backing providing dimensional support.
Advantages
Advantages include: - Low linear shrinkage - Low shelf life - Good reproduction of detail - Can be cut, sanded and repaired - Good cheical bonding with other material

Polycondensation Silicone Elastomers

Grade	Catalyst	Catalyst Ratio	M Pas Viscosity	Pot Life	Demould	Shore A	Tear Strength	Main Application
Casting	48	130	0.77	1lb 10oz	<0.15	1160	20	Fibrous moulding
Cerecast	47	135	0.44	1lb 11oz	<0.15	1595	20	Simple casting (SST)
Normal	44	140	0.71	1lb 12oz	<0.15	1740	27	Double (and treble casting) (LST)
Procast+	44	140	0.71	1lb 12oz	<0.15	1740	27	Double (and treble casting) (SST)
Cerafine	44	140	0.71	1lb 12oz	<0.15	1740	27	Casting and roller (SST)
W	43	140	0.71	1lb 12oz	<0.15	1740	27	Simple casting & double casting (LST)
Classic	44	145	0.69	1lb 13oz	<0.15	1740	27	Fibrous moulding
Millecast	43	140	0.69	1lb 13oz	<0.15	1885	27	Casting (roller with high W/P) (SST)
Advantia	43	145	0.69	1lb 13oz	<0.15	1885	27	Double or more casts (LST)