Ceramic fiber gaskets: the parts around the seal
A gasket is only one element in a joint. Expansion joints, valve seats and furnace doors each need their own fitting and maintenance discipline.
Ceramic fiber gaskets are flexible high-temperature sealing materials for kilns, hot pipework and high-temperature valves. They fill the gap at flange faces, pipe joints, furnace door mating faces and valve seats, giving gas-tight sealing together with thermal insulation, and reducing heat leakage and convective loss.
Fitting a gasket correctly is only part of the job. The structures around it, and the way they move, decide whether the joint stays sealed through a thermal cycle.
Points that decide joint life
- Expansion joints and bellows: gasket grade matched to the movement and the temperature
- Valve seats and stems: clearance checked after the gasket is compressed
- Furnace doors: flatness of the mating face, and a gasket that recovers after each opening
- Bolting: torque sequence, and re-torque after the first heat cycle
Reference note. Figures and standard references are indicative and do not replace the project specification, the current edition of the standard, or product test reports for the specific supply.