Kalrez® Bonded Door Seals
Bonded door seals for gate valves and slit valve door seal applications provide improved sealing performance versus conventional O-rings by reducing particle generation, extending seal life and minimizing replacement time during preventive maintenance.
DuPont™ Kalrez® bonded door seals are designed for easy installation and low particle generation. They combine a custom seal design and proprietary adhesion technology along with the excellent plasma resistance of Kalrez® perfluoroelastomer seal materials developed for semiconductor applications. The seal is held in a “fixed” position versus conventional O-rings, thereby eliminating “rolling/twisting” and abrasion during door actuation. In addition, the seal design has been optimized using finite element analysis (FEA) to minimize high concentrations of localized stresses. As a result, both particle generation and sealing performance are significantly improved versus conventional O-rings.
Bonded door seals replace O-ring seals currently used in gate valve, and slit valve dovetail grooves in particle sensitive semiconductor etch, ash, strip and/or deposition processes.
Lower Particle Generation and Extended Seal Life versus Conventional O-rings
Less Replacement Time Versus O-ring Seals During Preventive Maintenance
DuPont™ Kalrez® bonded door seals are available for a number of valve types used in semiconductor OEM equipment platforms. In addition, a custom Kalrez® bonded door seal can be developed for most gate valve and slit valve door applications if not currently available. Kalrez® UltraPure™ post cleaning and packaging is standard for all bonded door seals.