CeramTec’s pressure feedthroughs are terminated in NPT (National Pipe Thread) fittings or other threaded fittings to allow for easy bulkhead installation. The NPT (National Pipe Thread) pressure units are designed to be sealed using PTFE tape or other acceptable sealants. All other designs use an O-ring seal.

These Ceramaseal® components are usually used in pressure vessels or industrial environments. High vacuum applications are also common but note that the use of threaded connections in a vacuum system should be minimized. The small spaces between the threads can cause virtual leaks.

CeramTite™ High Pressure Feedthroughs
CeramTite™ feedthroughs consist of a Nickel plated Alumel pin bonded directly to the threaded bolt using our proprietary glass-ceramic sealing process. These hermetically sealed feedthroughs utilize an O-ring crush seal to make the external pressure seal. The hex bolt side is designed to be the high pressure side of the feedthrough. The temperature rating of the assembly is limited by the O-ring material. Viton® is the standard O-ring material used and this material has a high end temperature capability of 205 ºC.

Tec-Seal™ High Pressure Feedthroughs
Tec-Seal™ feedthrough products are built for extreme downhole environments. These rugged hermetic feedthroughs are rated for pressures up to 25,000 psi and temperatures up to 250° C. The Tec-Seal™ embedded seal design will maintain the seal integrity even if one or both sides of the feedthrough are sheared off, thus protecting the bulkhead electronics from damage.