Loading…
Manufacturing services
CNC turning and milling · From 1 part
Insulators, bushings, seals, valve seats, connectors, guides and high-temperature parts in PEEK, turned and milled from your file. Upload your CAD and order online, starting at a single part.
Stepped insulator
PEEK · Ø36 × 30 mm · Ø24 × 20 step · Ø10 through hole · CNC turned
1 pc
$64.32 USD
per part
25 pcs
$23.84 USD
per part
-62.94%100 pcs
$21.89 USD
per part
-65.97%PEEK (polyether ether ketone) is a high-performance plastic. It works continuously up to about 250 °C, takes 96–110 MPa in tension, resists nearly all chemicals and fuels, insulates electrically and barely absorbs moisture. That is why it is used for insulators, bushings, seals, valve seats, connectors and parts for aerospace, medical, oil and semiconductor equipment. At PREMSA we CNC turn and mill it from your file, starting at a single part with an instant price.
PEEK properties: mechanical, physical, thermal and electrical data to choose the material for your machined part.
Material Type
Semi-crystalline high-performance thermoplastic
Primary Characteristics
High temperature resistance, excellent chemical resistance, high strength, dimensional stability
Tensile Strength (Ultimate)
14,000–16,000 psi (96–110 MPa)
Flexural Strength
20,000–24,000 psi (138–165 MPa)
Compressive Strength
16,000–20,000 psi (110–138 MPa)
Elongation at Break
20–50%
Hardness
Rockwell M95–M105
Density
1.30 g/cm³
Elastic Modulus
500,000–600,000 psi (3.5–4.1 GPa)
Continuous Service Temperature
~250 °C (482 °F)
Melting Point
~343 °C (649 °F)
Glass Transition Temperature
~143 °C (289 °F)
Thermal Conductivity
~0.25 W/m·K
Machinability
Good: it is tough, so it is clamped firmly and cut with sharp tooling; fiber-filled grades wear tooling faster
Chemical Resistance
Excellent (resistant to most chemicals, fuels, and aggressive environments)
Wear Resistance
Excellent
Electrical Insulation
Excellent
Moisture Absorption
Very low
Common Forms
Round rod, plate and tube; unfilled, glass-filled and carbon-filled
Typical Applications
Electrical and thermal insulators, bushings, seals, valve seats, connectors, aerospace, medical, oil and semiconductor parts
Rating across key engineering and manufacturing criteria.
Strength
Weight
Machinability
Thermal Resistance
Chemical Resistance
Dimensional Stability
Wear Resistance
Cost Efficiency
Upload your CAD file and get an instant price and delivery date. CNC turning and milling from one part to production.
We CNC turn and mill PEEK parts that have to work with heat, chemicals or electricity without losing strength or size.
Electrical and thermal insulators
Bushings and bearings
Seals and gaskets
Valve seats
Connectors
Aerospace parts
Medical equipment parts
Oil and gas parts
Custom PEEK parts
What people ask most about PEEK parts: what it is, uses, machining, temperature, strength, chemicals, insulation, grades, medical use, sterilization, price and tolerances.
PEEK is chosen for parts that have to work with heat, chemicals or electricity without losing strength or size: insulators, bushings, seals, valve seats and connectors.
At PREMSA Industries we machine PEEK with CNC turning and milling from your file, from a prototype to production.
PEEK is chosen when the part has to carry load at high temperature and in aggressive environments.
If your drawing doesn’t specify tolerances, we machine to ISO 2768-m (medium). On dimensions you call out —diameters, holes and fits— we can hold ±0.05 mm (±0.002 in), and critical dimensions are checked in inspection. PEEK is stable and barely absorbs moisture, so it holds its dimensions.
PEEK is machined with CNC turning, CNC milling, drilling and tapping. It is tough: it is clamped firmly, cut with sharp tooling and with coolant so it doesn’t heat up. On parts with heavy stock removal or tight tolerances, the material can be annealed before the finishing pass so it doesn’t distort later.
Because it works at high temperature, resists chemicals and insulates electrically, PEEK is used in many parts made with CNC machining.
PEEK is usually the right choice when the part has to work with heat, chemicals or electricity and cannot fail.