CoorsTek technical ceramics: seal faces, valve parts, bushings and Cerbec balls

Hard seal faces, valve balls and seats, bushings, Cerbec silicon nitride balls, oilfield parts and wire drawing rollers. Material selection and a quotation for your project.

Ceramic valve components

CoorsTek makes ball and seat sets, plugs, gates, erosion rings and sleeves for valves. Balls and seats use alumina that resists abrasion, erosion and corrosion. Plug valve components are made from high-purity zirconia for caustic service.

Balls and seats: alumina
Plugs: high-purity zirconia
Gates: fluid erosion resistance
Ceramic faucet discs

Hard face seal components

CoorsTek makes heavy-duty hard face seal components, including rings for centrifugal pumps. Faces are produced in aluminum oxide, silicon carbide, silicon nitride and tungsten carbide. Material choice balances corrosion resistance, hardness and operating temperature.

Aluminum oxide Al2O3
Silicon carbide SiC
Silicon nitride Si3N4
Tungsten carbide WC

Bushings and plain bearings

For thin-walled bearings CoorsTek makes thrust washers, bushings, plain and sleeve bearings and flange bearings. They use zirconia, tungsten carbide and silicon carbide for wear, heat and corrosion resistance. The company does not make complete ball or roller bearing assemblies.

Thrust washers
Bushings and sleeve bearings
Flange bearings
ZrO2, WC and SiC

Cerbec silicon nitride balls and rollers

Under the Cerbec name CoorsTek makes bearing balls, roller blanks and custom parts for hybrid and all-ceramic bearings. The material is a proprietary silicon nitride. Listed uses include turbomachinery and pumps, wind turbines, precision machine spindles and powertrains.

Balls and roller blanks
Hybrid bearings
Spindles, pumps, wind turbines
Silicon nitride: up to 1400 °C

Oilfield and pipeline parts

For MWD telemetry CoorsTek makes zirconia poppet valves that resist abrasive drilling mud. Ceramic ball seat inserts in landing collars resist fluid cutting during pumping and cementing. Zirconia wear pads are fitted to pipeline inspection pigs.

MWD poppet valves: zirconia
Landing collar ball seat inserts
Pipeline pig wear pads
Made to customer design

Flowguard pulsation dampeners

Flowguard dampeners remove pulsation, vibration and noise from positive displacement pumps. A gas charge, usually nitrogen, sits behind a flexible membrane, and the membrane is changed without removing the damper from the line. HG, FG, FB, FD and DS series follow PD5500 or ASME VIII.

HG, FG, FB, FD, DS series
Membranes: 10 rubber types or PTFE
Shell: 316 stainless steel
PD5500 and ASME VIII codes

Wire drawing capstans and pulleys

For four decades CoorsTek has supplied capstans, guide rollers and pulleys for wire drawing, from rod breakdown to ultra-fine wire. CeraSurf materials include Dura-Z zirconia, Alumina 90 and tungsten carbide. A 2–4 Ra polish on Dura-Z reduces scratching of the wire.

Dura-Z: 2–4 Ra finish
Alumina 90: about 50% lighter than steel
Tungsten carbide: up to 650 °C
Capstans, rollers, pulleys

Alumina, silicon carbide and silicon nitride

CoorsTek holds over 400 proprietary technical ceramic formulations. Alumina grades range from 80% to more than 99% Al2O3, with over 100 unique compositions. PureSiC silicon carbide made by chemical vapor deposition reaches a purity of 99.9995%.

Over 400 ceramic formulations
Al2O3 grades AD-94, AD-96, AD-995
PureSiC: 99.9995% purity
Si3N4 SN-101C: 1000 MPa

How to choose a CoorsTek ceramic part

Selection starts with the unit and the medium. For valves in abrasive or caustic service CoorsTek offers alumina balls and seats and zirconia plugs, for pumps hard seal faces and bushings, for bearings Cerbec silicon nitride balls, and for wire drawing CeraSurf capstans and rollers.

Next come material properties: wear resistance, fracture toughness, corrosion resistance and operating temperature. The manufacturer rates NBD-200 and SN-101C silicon nitride up to 1400 °C, and tungsten carbide in wire drawing rollers up to 650 °C.

Valves and seals for severe service

CoorsTek ceramic valve trim is designed for lime slurries, cat cracker slurries, corrosive acid slurries, high-pressure steam, aqua regia and flue gas. The range covers ball and seat check valves, gate, needle and plug valves, erosion rings and sleeves.

Hard seal faces for centrifugal pumps are made in aluminum oxide, silicon carbide, silicon nitride and tungsten carbide. The manufacturer selects the material by balancing hardness, compressive strength, thermal expansion and P/V capability.

Plain bearings and Cerbec elements

For thin-walled bearings CoorsTek makes thrust washers, bushings and flange bearings in zirconia, tungsten carbide and silicon carbide. The company does not make complete ball or roller bearing assemblies.

Cerbec elements are balls, roller blanks and custom parts in proprietary silicon nitride for hybrid and all-ceramic bearings. They are lighter and stiffer than steel, resist corrosion and need less lubrication; listed uses include machine spindles, turbomachinery, pumps and wind turbines.

Oilfield parts and Flowguard dampeners

For drilling CoorsTek makes zirconia poppet valves for MWD pulsar units and ceramic ball seat inserts for landing collars, held by heat shrink in an aluminum body. For pipeline inspection it supplies zirconia wear pads for inspection pigs.

Flowguard HG, FG, FB, FD and DS dampeners remove pulsation from positive displacement pumps. Shells come in 316 stainless steel, polypropylene or special alloys, membranes in 10 rubber types or PTFE, built to PD5500 or ASME VIII.

Ceramics for wire drawing

CoorsTek capstans, guide rollers and pulleys serve wire drawing from rod breakdown to ultra-fine wire. A capstan joins solid ceramic rings between metal flanges, and non-tapered rings can be rotated in the carrier.

CeraSurf materials are Dura-Z zirconia with a 2–4 Ra polish, fine-grained Alumina 90 at about 50% lighter than steel, and tungsten carbide rated up to 650 °C.

The manufacturer and its materials

CoorsTek Inc. was founded in 1910 and makes technical ceramics from over 400 proprietary formulations, with over 5,000 employees. Alumina grades range from 80% to more than 99%, and PureSiC silicon carbide reaches 99.9995% purity.

Besides industrial parts the company makes ceramics for semiconductor equipment, medical devices and vehicles. Material grade, dimensions and lead time are stated in the quotation for each project.

CoorsTek and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of CoorsTek and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.