ZrO₂
Zirconia Ceramics
Zirconia for wear duty: high strength and toughness with a fine ground surface that holds up under abrasion and repeated mechanical contact.
Material detailsFORM 05
Ceramic Rings
Ground rings and sealing elements for assemblies that must hold a bore or a face at temperature.
A ceramic ring is usually a fit: it holds a bore, seats a face or isolates a shaft. That means the diameters and the face flatness are the part — everything else is packaging.
We ask which diameter is the datum. Concentricity, wall thickness and face flatness all follow from that answer, and getting it wrong is the most common reason a ring is re-drawn after the first sample.
Specification and control points
| Material system | Alumina · Zirconia · Silicon carbide · Silicon nitride |
|---|---|
| Inside / outside diameter | Ground to your drawing |
| Wall thickness | To drawing, with tolerance |
| Face flatness | Stated for the seating face |
| Concentricity | Stated against the datum diameter |
| Ground surfaces | Named individually on the drawing |
| Volume | Sample, batch or recurring supply |
FORM 05Zirconia ring with six bolt holes — supplied part photograph
Part photographs
Ceramic Rings parts photographed
Supplied photographs for this catalogue entry. Captions describe the geometry in each frame — ask us for drawings and grades with your enquiry.
Split band ring
Zirconia ring with six bolt holes
Silicon nitride bush with an internal rib
Silicon nitride ring
Silicon nitride bushes with keyways
Silicon carbide seal and sleeve family
Silicon carbide ceramic seals with stepped sealing faces
Silicon carbide sleeve with five drive lugs in the bore
Silicon carbide seal carriers, hexagonal outside profile
Silicon carbide seal ring stacks, drilled and slotted
Silicon carbide sleeves with notched top faces
Typical applications
Applications this form is specified for
The industries below are the applications this material system is most often specified for. Tell us your own duty and we will confirm whether it is the right grade.
Sealing and seating facesInsulating collars and spacersBearing and bushing elementsLocating and retaining ringsWear rings in pumps and valves
Made to your requirement
What is defined with you before production
- Which diameter is the datum
- Flatness of the face that seals or seats
- Concentricity requirement, and between which surfaces
- The medium, pressure and temperature at the seal
Supply stage
Sample part first, then batch production on the same material and process basis. Ask for the material data sheet with your quotation.
Related pages
Forms and materials to compare
FORM 04
Ceramic Plates
Flat plates and substrates where flatness, insulation and wear resistance decide the part.
Material detailsFORM 08
Ceramic Wear Parts
Liners, guides, bushes and contact parts that outlast metal where surfaces abrade or gall.
Material details