Technical Information

Materials

 

PEEK

 

Ketron™ PEEK grades offer chemical and hydrolysis resistance similar to PPS, but can operate at higher temperatures. Unreinforced PEEK offers good wear resistance, while Carbon-reinforced PEEK provides excellent wear capabilities. PEEK can be used continuously to 480°F (250°C) and in hot water or steam without permanent loss in physical properties. For hostile environments, PEEK is a high strength alternative to fluoropolymers. PEEK carries a V-O flammability rating and exhibits very low smoke and toxic gas emission when exposed to flame.

 

Product Profile

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• Excellent chemical resistance
• Very low moisture absorption
• Inherently good wear and abrasion resistance
• Unaffected by continuous exposure to hot water or steam

 

Proven Applications
Pump wear rings

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30% Carbon fiber-reinforced Ketron PEEK improves centrifugal pump efficiency by permitting closer running tolerances and eliminated corrosion, galling and wear problems. (Prior material: Bronze)

Bushings, bearings, seals, back up rings

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In applications ranging from aircraft to oilfield drilling, components machined from Ketron PEEK improve performance and reliability. (Prior materials: Reinforced PTFE, PPS, Bronze)

 

MATERIALS
Ketron PEEK (H101)
This general purpose grade is unreinforced and offers the highest elongation and toughness of all PEEK grades.

30% Glass-reinforced Ketron™ PEEK (H301)
The addition of glass fibers significantly reduces the expansion rate and increases the flexural modulus of PEEK. This grade is ideal for structural applications that require improved strength, stiffness or stability, especially at temperatures above 300°F (150°C).

30% Carbon fiber-reinforced Ketron™ PEEK (H201)
The addition of carbon fibers enhances the comprehensive strength and stiffness of PEEK, and dramatically lowers its expansion rate. It offers designers optimum wear resistance and load carrying capability in a PEEK-based product. This grade provides 3.5 times higher thermal conductivity than unreinforced PEEK - dissipating heat from the bearing surface faster.

 

Engineering Notes:
The stiffness of PEEK drops off significantly and expansion rate increases above its glass transmission temperature (Tg) of 300°F (150°C). A material like Torlon® PAI would be better suited for close tolerance bearings or seals operating at temperatures higher than 300°F (150°C).