The Solution: A Highly Engineered Metal Seal, HELICOFLEX® DELTA
The HELICOFLEX® DELTA seal was identified as an optimal solution for this application. It incorporates two small ridges, or “Deltas,” on the face of the seal. The high-contact stress in the seal track makes the HELICOFLEX® DELTA seal an excellent choice for ultra-high vacuum applications that require ultra-low Helium leak rates. This solution achieves a 120 deg.C 2barG and helium leak-tight vacuum. The prototype order was received in 2017and testing successfully completed. Technetics continues to supply thousands of precision metal seals yearly to this satisfied customer as the demand for semiconductor processing continues to boom.