Custom Machinable Glass Ceramic Ring Segment Slots Bolt Holes Precision Insulating Ceramic Ring Large Diameter OEM

What this ring does

Rings like this sit between two flanged assemblies that must not share heat or current. The slot pattern segments the ring so it can flex slightly during assembly and thermal cycling, while the notch and hole pattern locks its rotational position and carries the bolt load.

Getting all of this into one ceramic part is where machinable glass ceramic earns its place. In alumina, the slot geometry would need diamond tooling and a long, expensive route. Here, the full profile — bore, outer steps, segment slots, notches and bolt holes — is cut conventionally from one blank.

Because there is no firing step, the ring you inspect is the ring you designed: no shrinkage, no distortion, and concentricity that survives into the delivered part.

At a glance

• Form: annular ring with segmented slot pattern

• Material: machinable glass ceramic (Macor-type equivalent)

• Function: flange isolation + positional location

• Features: bores, steps, slots, notches, bolt holes

• Geometry: full profile cut in one machining setup

• Documentation: dimensional and material certificates on request

Typical applications

• Vacuum chambers — isolation ring between flanged sections

• Semiconductor tools — insulating spacer ring under heated assemblies

• Plasma and RF equipment — electrically isolated support rings

• Optical benches — locating ring that blocks heat and current

Custom options

• Slot pattern: count, width, depth and angular position

• Notch profile: V, rectangular or custom locating geometry

• Hole pattern: bolt circles, counterbores, through or blind

• Section: stepped faces for axial registration

• Marking: laser part numbers on the face, on request