Family-owned precision machine shop · Aurora, Illinois · Since 1986

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Materials · High-performance plastics

PEEK machining

Custom PEEK parts CNC machined to your drawing or sample: bushings, wear rings, insulators, seals and more, in unfilled and filled grades. Machined in our Aurora, Illinois shop.

Quote a PEEK part (630) 904-2525

PEEK at a glance

Full name
Polyetheretherketone (PEEK)
Also called
Ketron® PEEK, TECAPEEK®
Known for
Keeping its strength, stiffness and chemical resistance at high temperatures
Common in
Oil and gas, medical, semiconductor and food equipment
Grades
Unfilled, glass-filled, carbon-filled, bearing grade

Parts in PEEK

PEEK parts we machine

The parts we see most often in PEEK, and why it suits each job. We machine any PEEK part to your drawing or sample, listed here or not.

Need a different PEEK part? Send the drawing, or the old part, and we’ll quote it. Request a quote

Is PEEK right for the part?

Where PEEK works, and where another plastic may suit

General guidance on how PEEK behaves. If your drawing specifies a PEEK grade, we machine to it.

Where it works

Heat
Keeps its strength at temperatures that soften most plastics.
Chemicals
Resists most chemicals, fuels and oils.
Steam
Withstands steam, hot water and repeated sterilization.
Strength
Stiff and strong enough to replace metal in many parts.
Wear
Wears well, especially in bearing grades.
Fire
Resists burning, with low smoke.

Where another plastic may suit

If the part needs Often used instead
Concentrated sulfuric or nitric acid Strong concentrated acids can attack PEEK. PTFE resists them.
Long outdoor exposure Sunlight degrades unprotected PEEK over time. PVDF is unaffected by weather.
Lowest friction or non-stick Bearing grades of PEEK run well, but PTFE has lower friction and doesn’t stick.
High heat at lower cost Where PEEK’s full heat and chemical resistance isn’t needed, these cost less.
Parts that don’t run hot At normal temperatures, these machine well for much less.

Precision in PEEK

How we machine PEEK

±0.002"–±0.005" On critical dimensions, depending on the plastic

PEEK is stiff and very stable in size, so it usually sits toward the tighter end of our range. We confirm the critical dimensions with your quote.

  1. Internal stress

    PEEK stock can hold stress that moves the part as material is removed.

    We rough the part first and finish critical features in a separate pass.

  2. Filled grades

    Glass and carbon wear cutting tools quickly, which can let sizes drift.

    We use tooling suited to filled grades and check critical dimensions through the run.

  3. Material cost

    PEEK is among the costliest plastics, so a scrapped part is expensive.

    We size stock to the part and plan setups to get it right the first time.

Grades

PEEK grades

PEEK comes unfilled and in glass-filled, carbon-filled and bearing grades. Name the grade on your drawing, or tell us how the part runs and we’ll suggest one.

Grade Typically used for
Unfilled Most PEEK parts, and parts that need the most toughness.
Glass-filled Stiffer, more stable structural parts.
Carbon-filled The strongest and stiffest grade, for high-load parts.
Bearing grade Bushings, wear rings and other sliding parts.
Food-contact Food processing parts. Compliance comes with the grade’s supplier documentation.
Metal-detectable Food and pharmaceutical lines where stray fragments must be found. Detectable plastics

Buyer questions

PEEK FAQs

Something else? Call (630) 904-2525.

All plastics we machine

Yes. Ketron® PEEK and TECAPEEK® are brand names for PEEK stock. If your drawing specifies one, we machine the part in PEEK to that grade. CDS isn’t affiliated with the trademark owners.

Both are high-performance plastics for heat and strength. PEEK handles higher heat, more chemicals and more wear. Ultem costs less and is a strong electrical insulator. We machine whichever your drawing names, or suggest one with your quote.

Yes. We machine unfilled, glass-filled, carbon-filled and bearing grades of PEEK to your drawing.

Yes. We supply PEEK sheet and rod, cut to size when you need it, through our material supply service.

Getting a quote

Start with what you have

A drawing, a sketch or the worn PEEK part itself. Our experienced team takes it from there.

Request a quote (630) 904-2525
When a breakdown can’t wait, ask about our expedited service