Polyetheretherketone (PEEK)

PolyetheretherketonePEEK

A high performance thermoplastic with the characteristics common to this group – strong, stiff, hard, high temperature resistance, good chemical resistance and inherently low flammability and smoke emission. PEEK is pale amber in colour and usually semi-crystalline and opaque, except thin films are usually amorphous and transparent. It also has very good resistance to wear, dynamic fatigue and radiation, but it is difficult to process and very expensive. Filled grades, including ones designed for bearing-type applications, are also used.
Applications include flexible printed circuit boards (film), fibres and monofilaments, injection moulded engineering components and items used in aerospace and radiation environments.

General Properties:

ASTM or UL test

Property

PEEK

Physical Properties

D792 Density
(lb/in3)
(g/cm3)
0.048 1.32
D570 Water absorption, 24 hours

Mechanical Properties

D638 Tensile Strength at Yield (psi) 16,000
D638 Tensile Modulus (psi) 570,000
D638 Tensile Elongation at Break (%) 20
D790 Flexural Strength (psi)
D790 Flexural Strength (psi) 27,000
D790 Flexural Strength (psi) 27,000
D695 Compressive Strength (psi) 20,000
D695 Compressive Modulus (psi)
D785 Compressive Modulus (psi)
D256 IZOD Impact Notched (ft-lb/in) 2.9

Thermal Properties

D638 Coefficient of Linear Thermal Expansion (x 10-5 in./in./°F) 2.5
D648 Heat Deflection Temp (°F / °C) at 264 psi 329 / 165
D3418 Glass Transition Temp (°F / °C) 315 / 157
D3418 Melting Temp (°F / °C) 705 / 374
Max Operating Temp (°F / °C) 500 / 260
C177 Thermal Conductivity
(BTU-in/ft2-hr-°F)
(x 10-4 cal/cm-sec-°C)

UL94 Flammability Rating V-0

Electrical Properties

D149 Dielectric Strength (V/mil) short time, 1/8″ thick 430
D150 Dielectric Constant at 1 MHz
D150 Dissipation Factor at 1 MHz
D257 Surface Resistivity (ohms per square) at 50% RH 5 x 1016
D257 Volume Resistivity (ohm-cm) at 50% RH 5 x 1016

Member Testimonials

ONGC – Oil and Natural Gas Corporation Limited

"ONGC - Oil and Natural Gas Corporation Limited" - Our complex drilling application where Shaft was eccentric and application was robust & muddy. Replacement was never easy. Mech Spares designed Oil seals resolved difficulty. This gave a complete joy to my maintenance team.
2014-06-08T07:48:57+00:00
“ONGC – Oil and Natural Gas Corporation Limited” – Our complex drilling application where Shaft was eccentric and application was robust & muddy. Replacement was never easy. Mech Spares designed Oil seals resolved difficulty. This gave a complete joy to my maintenance team.

Kuwait National Petroleum Company

"Mr Mohammed Al Duaigy" of (Kuwait National Petroleum Company) : We tried several diaphragms from renown worldwide Rubber manufacturing companies. We found Mech Spares technical know how and product to be of great durability and lasted 3 times more then anticipated. They have accurate understanding of there products.
2014-06-08T07:49:23+00:00
“Mr Mohammed Al Duaigy” of (Kuwait National Petroleum Company) : We tried several diaphragms from renown worldwide Rubber manufacturing companies. We found Mech Spares technical know how and product to be of great durability and lasted 3 times more then anticipated. They have accurate understanding of there products.

McCafferty BM Design Ltd, KENT United Kingdom

"McCafferty BM Design Ltd, KENT United Kingdom" - Most of the O rings manufacturing company suggested to use larger diameter and expensive elastomers. We learnt with Mech Spares that elastomer being weaker compare to metal and alloys and needs appropriate back up for high pressure or high vacuum applications. Further not necessary the most expensive elastomer is the best for all applications. We trust Mr Nilesh chodhari completely for all our O rings designing applications.
2014-06-08T07:50:26+00:00
“McCafferty BM Design Ltd, KENT United Kingdom” – Most of the O rings manufacturing company suggested to use larger diameter and expensive elastomers. We learnt with Mech Spares that elastomer being weaker compare to metal and alloys and needs appropriate back up for high pressure or high vacuum applications. Further not necessary the most expensive View Full →

Bhabha Atomic Research Centre ( BARC )

"Dr. A. Singh" of BARC: The electric Insulation mat manufactured by MECH SPARES as per IS 15624 tested at ERTL and found to withstand 40 Kv and still didn't tear. We have been using since 5 years and still didn't generate any fatigue. They arranged bulk delivery in short period.
2014-06-08T07:16:20+00:00
“Dr. A. Singh” of BARC: The electric Insulation mat manufactured by MECH SPARES as per IS 15624 tested at ERTL and found to withstand 40 Kv and still didn’t tear. We have been using since 5 years and still didn’t generate any fatigue. They arranged bulk delivery in short period.

Tata Steel

"Tata Steel" - One of our old machines started making loud noise and disturbed the entire village. We were compelled to stop the machines which lead to huge production loss. With the help of Mech Spares designed bellows in two part we could retain the lubrication and eliminate the noise.
2014-06-08T07:17:16+00:00
“Tata Steel” – One of our old machines started making loud noise and disturbed the entire village. We were compelled to stop the machines which lead to huge production loss. With the help of Mech Spares designed bellows in two part we could retain the lubrication and eliminate the noise.
View O Ring Reference Chart