Extreme elastomers are base-resistant

Edited by the Engineeringtalk editorial team Nov 17, 2003

Viton Extreme high performance specialty products are designed to meet demanding performance requirements currently not met by traditional high performance elastomers.

Viton Extreme high performance specialty products are based on an advanced polymer architecture (APA) and designed to meet the demanding performance requirements currently not met by traditional high performance elastomers.

Patrick Lederer, Marketing Manager - Viton Europe for DuPont Dow, said: "Viton Extreme fluoroelastomers combine the excellent thermal resistance of Viton with the unique resistance to chemicals and to environments that have historically exceeded the performance of conventional fluoroelastomers.

Viton Extreme products allow specifiers to confidently select parts used in highly caustic applications".

Viton Extreme TBR-605CS (developmental polymer VTR-8802) is a new, totally base-resistant Viton polymer that is inherently resistant to caustic chemicals and provides superior resistance to hydrocarbon oils and acids.

TBR-605CS, a new TFE/propylene copolymer, uses APA technology and a revolutionary new bisphenol cure site.

Compared to existing TFE/propylene polymers, TBR-605CS provides improved processing and lower volume swell in hydrocarbon oils.

TBR-605CS also has superior compression set resistance, good metal adhesion and good steam resistance.

Lederer said DuPont Dow foresees strong interest and various applications in the oil and gas exploration, chemical processing, utilities, automotive and heavy-duty/off-highway markets Due to its chemical structure, Viton Extreme TBR-605CS, like all TFE/propylene-based products, is not recommended for automotive or aircraft fuels.

Viton Extreme ETP-600S, also made with APA technology, is an upgrade to ETP-900 with significantly improved processing and end-use properties while maintaining the excellent resistance to acids, hydrocarbons and low molecular weight esters, ketones and aldehydes.

Like its predecessor, ETP-900, Viton Extreme ETP-600S has low-temperature flexibility (Tg-10C), and is inherently resistant to base attack and volume changes in highly caustic solutions, amines and hot water.

ETP-600S also has improved compression set resistance, and physical properties, all of which can improve seal performance and seal life.

The real difference between the new Viton Extreme ETP-600S and ETP-900 is improved processing.

ETP-600S exhibits improved mould flow, faster cure rates, and improvements in mould release and mould fouling.

The combination of improved processing characteristics should result in more trouble-free production processes.

As a result, processors can economically manufacture a larger volume of parts for high-end applications.

In complicated environments and chemically aggressive applications where standard FKMs or FEPMs are not an option, ETP-600S is the fluoroelastomer of choice.

Viton Extreme ETP- 600S truly is the best of both worlds.