High-Voltage Hermetic Seals
High-Voltage Hermetic Seals Are Bi-directional Seals for Vacuum or Pressure
Any type High voltage wire or cable up from 1-30 kV, single or multiple cables, with or without high voltage cable connectors. Depending upon the voltage, a wide variety of high voltage cables or wires up to 32 kV can be provided in a wide variety of hermetically sealed passthrough designs for low or high pressures and vacuums and temperature ranges between -200 to 200C. Cable insulations include PVC, silicone, XLPE, PTFE FEP Teflon® and Kapton®. Listed below are existing hermetic high voltage feedthru designs. Custom designs are also readily available upon request. All PAVE hermetic seals will pass either a vacuum helium leak test 10^-6 to 10^-9cc/sec leak rate or a pressurized gas bubble leak test. PAVE hermetic epoxy seals are much more robust also than fragile glass or ceramic seals.
High-Voltage Wire Feedthrough Seals Specifications
- Dielectric Strength: >17.4 kV/mm
- Dielectric Constant: 5.3@ 1 Mhz
- Volume Resistivity: @ 125° C1x1015 Ohm-cm
- Dissipation Factor: 0.03 @ 1 Mhz
- Hardness, Shore D: 96
- Low Vacuum Outgassing: TML: 25% ;CVC<: .01%
- High Fungus Resistance: MIL-STD–454J/4
- Specific Gravity: @ 25° C 2.3
- Compressive Strength: >948 kg/cm2
- Compressive Modules: 7.7×104 kg/cm2
- Tensile Strength: >470 kg/cm2
- Water Absorption (24 hours): 0.03%
HERMETIC EPOXY TEMPERATURE RATING (Epoxy is proprietary and not sold separately)
The PAVE-Seal® epoxy is impervious to most oils, solvents, fuels, freons, gases, etc. Epoxy samples are available upon request for customer’s evaluation for any specific chemical compatibility.
Any type or size of wire or cable may be specified including coaxial cables, thermocouple wire pairs, high voltage wires, fiber optic cable, flat cables, etc. for length.
NO DETECTABLE LEAKAGE THRU CONDUCTOR OR INSULATION.