Product Catalog
68Pages

Douglas Electrical Components Ductorseal® Hermetic Feedthrus Feedthru Design Guide

About Douglas Electrical Components Douglas Electrical Components pioneered the development and practical application of epoxies to feedthru technology in 1977. Our first product was an NPT epoxy body sealing short lengths of #14 and #24 AWG wires. From that first innovative wire harness feedthru we developed the product lines which are offered in the following pages. The evolution of these product lines has been in response to solving conductor sealing problems which our customers brought to us. It is this precept which has resulted in the diversification of the product - virtually every...

Sealed Wire & Cable Assemblies 2-11 These feedthru seals provide a sealed interconnecting harness in a single, pre-tested, ready-to-install assembly. Virtually any wire, cable, or harness can be hermetically sealed. Many applications cannot use the wire harness feedthru approach because of a reguirement to have a disconnectable circuit at the pressure bulkhead or vacuum port plate. PotCon™ hermetically sealed connectors are easily specified from these tables. Sealed Studs and Motor Terminals 44-47 These StudSeal® feedthrus are widely used in transformers, hermetically sealed compressors,...

Sealed Wire & Cable Assemblies Sealed Wire Harness Feedthru Assemblies This section describes our unique line of sealed conductors, including wires, cables, and harnesses. We can permanently and hermetically seal virtually any conductor through any Advantages of Direct Wire Harness Hermetic Feedthrus: • You can specify the exact conductors you need. • You can purchase a complete interconnecting harness which is pre-wired and pre-tested; ready to install. • Typical problems associated with connectors or "pin" style feedthrus are eliminated... no more bent pins, mismated connector sets,...

Sealed Wire & Cable Assemblies A Typical Wire Harness Feedthru HERMETICALLY SEAL -/ r- (WE OFFER HUNDREDS OF DIFFERENT General Notes, Specifications Material Specifications Stainless Steel: *Consult us if higher limits are needed. Standard Epoxy Characteristics Vacuum Outqassinq: 25mm2 x 1mm sample at 125°C vs optical condensing RESULTS: <0.22% Wt Loss and <0.002% VCM. No visible deposits on the condensing plate. Thermal Conductivity: 10 BTU in/hr ft2 °F Volume Resistivity: 5x1016 flcm Maximum Service Temperature of Epoxy: 250°F* Water Absortion: <0.15% in 7 days *See page 60 for higher...

Sealed Wire & Cable Assemblies Standard Wire Harness Feedthrus (Pressu Face Seal Housing, Pressure Appl. Stainless Steel Stainless Steel Steel (Zinc Chromate) * Housing dimensions are on page 10 and 11. To Order: Specify the catalog number of the housing style, wire style, and count you need. For copper conductors, append two dash numbers for the A lead length and the P lead length (in feet) respectively, i.e.: 28210-3-4 is a 28210 feedthru whose A lead length is 3 feet and P length is 4 feet. For the thermocouples, add another suffix after the length suffixes specifying the ISA Douglas...

6 Sealed Wire & Cable Assemblies Standard Wire Harness Feedthrus (Vacuum Housings)* Flange (Varian Style) Vacuum Face Seal with Cable Clamps Stainless Steel Housing, Aluminum Clamps * Housing dimensions are on page 11. To Order: Specify the catalog number of the housing style, wire style, and count you need. For copper conductors, append two dash numbers for the A lead length and the V lead length (in feet) respectively, i.e.: 28310-3-4 is a 28310 feedthru whose A lead length is 3 feet and V length is 4 feet. For the thermocouples, add another suffix after the length suffixes specifying the...

Sealed Wire & Cable Assemblies 7 Custom Feedthrus Fabricated to Your Specifications Illustrations of various NPT housings with wire harnesses sealed through: Face Seal "0" Ring pressure housings seal harnesses over wide pressure ranges: E & F - NPT Female to Face Seal Bullet Hub I & J - Pressure face seal housings install through bored hole for an easy solution to mounting problems... 1V and 3/8" sizes illustrated. Vacuum seals with flange or vacuum face seal housings: K & L - 23'4M and Vh" Flanges mount easily to conventional vacuum ports. M & N - These vacuum feedthrus mount through a...

Sealed Wire & Cable Assemblies Custom Wire Harness Feedthrus Design Instructions To specify housings for your custom designed feedthru using 1. Define your wire "packages". For multiple feedthru jobs, group wires for your convenience either for physical loca- tion, electrical considerations (i.e., not having power lines next to low level circuits) or both. 2. For each wire type and gauge, look up the wire area in the wire area table on page 9. 3. For each bundle, look up the area factor in the area factor 4. For each bundle, multiply the wire area times the area factor. This yields the area...

Sealed Wire & Cable Assemblies Areas for Common Wire Types (Virtually Any Wire/Cable Can Be Used) Douglas Electrical Components

10 Sealed Wire & Cable Assemblies Standard Housing Data Custom Housings Are Common–Contact Our Applications Engineer NPT Thread Brass Part No. Stainless Part No. Area (Sq. In.) Hex Size L 1/4” NPT 6096-1-1 9559-2 0.06 0.63” 0.84” NPT Plug 3/8” NPT 13904 9559-4 0.10 0.75” 0.75” (Brass or Stainless Steel) 1/2” NPT 9281 9559-7 0.19 0.88” 1.09” 3/4” NPT 13783 9559-10 0.36 1.13” 1.17” 1” NPT 9026 9559-13 0.64 1.38” 1.36” NPT Thread Epoxy Part No. Area (Sq. In.) Hex Size L 1/4” NPT 5890-2 0.07 0.38” 1.00” 3/8” NPT 5890-3 0.10 0.50” 1.00” 1/2” NPT 5890-7 0.18 0.63” 1.20” 3/4” NPT 5890-8 0.28 0.81”...

Sealed Wire & Cable Assemblies 11 Standard Housing Data Custom Housings Are Common-Contact Our Applications Engineer J0" Ring Face Seal Housing (Pressure or Vacuum, continued) Face Seal Adapter (Steel) J0" Ring Face Seal Housing (Vacuum Face Seal) Thread _J Thickness =1" L_"Other"_J We also offer a very large capacity feedthru housing which clamps onto a vacuum port plate entirely from the outside (eliminates having to spin a jam nut). Please refer to the Unique Feedthrus section on Face Mount housings, page 50. Vacuum Flange Housings We can fabricate a feedthru seal with virtually any...