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Solvay Udel polysulfone (PSU) . 
high-strength, semi-tough thermoplastic that has a heat deflection temperature of 345°F (174°C), and maintains its properties over a wide temperature range. 
success replacing brass in pressurized hot water plumbing applications. 
Udel P-1800 
powders type,natural nt11.
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Udel M-2300 MR
natural transparent,injection moldable,low-color of polysilfone that is nearly water white in color,also offers superior retension of properties after repeated ateam sterlizations.
Features: Acid Resistant; Alcohol Resistant; Alkali Resistant; Cleanable; Good Chemical Resistance; Good Sterilizability; Good Surface Finish; Good Toughness; High Clarity; High Heat Resistance; Hydrocarbon Resistant; Hydrolytically Stable; Steam Sterilizable
Uses: Medical/Healthcare Applications
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Udel P-1700 NT11
clarity amber transparent in color, general purpose for injection molding. 
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Udel P-1710 NT15
Bone white in color, general purpose for injection molding 
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Udel P-1700 BK937
Black, general purpose for injection molding 
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Udel P-3700 HC 
high-clarity grade of polysulfone (PSU) that is nearly water-white in color. This grade was designed to eliminate the yellow cast and provide design flexibility and improved aesthetics for applications where a yellow cast is undesirable. Compared to Udel P-1700, P-3700 HC has higher flow and a slightly greater tendency to stress crack in some aggressive environments.

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UDEL P-1700 HC
nearly water white in color and approaches the clarity of polycarbonate. The material's low color combined with its hydrolytic stability and resistance to heat and chemicals provides a level of performance that was previously unavailable with high-clarity plastics.

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Udel P-1700 CL2611 CMP
Water Transparent, general purpose for injection molding.
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Udel P-1700 Rd
red transparent,general purpose for injection molding.
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Udel P-1700 RAL7045
Grey, general purpose for injection molding,
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Udel GF-130NT，Udel GF-130 BK937,
30%GF reinforced PSU for injection molding.
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Udel GF-120NT,Udel GF-120 BK937,
20%GF reinforced PSU for injection molding.
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Udel GF-110NT,Udel GF-110 BK937,
10%GF reinforced PSU for injection molding.
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Udel P-3500,
clarity amber transparent in color.
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Udel P-3500 LCD MB7,Udel P-3500 LCD MB3
 membrane application.
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Featured Application :  
Chemical resistance  
Repeated steam autoclavability  
Siffness, strength, and dimensional stability  
FDA, USP Class VI approvals  
Colorability  
Injection moldability to reduce secondary operations  
174°C HDT 
Oxidative stability 
Hydrolytic stability 
Transparent 

** any psu questions ,Please e-mail to: x.g.chiang@gmail.com