Proponent has earned a remarkable record based on the premise of first time quality and on-time delivery. Our state of the art systems and equipment enhances more than a half-century of direct experience in developing innovative solutions to complex customer needs.

We support prototype, tooling and both low & high volume production quantities.

Manufacturing Capabilities Flyer


  • Transparent
  • Offer solutions
  • Concurrent engineering support
  • Expedite services
  • Quick response


  • Flat pattern & mold extrusion seals – cutting & bonding
  • Water Jet Machining
  • CNC multi-axis machining, horizontal and vertical
  • High-speed machining software
  • Interactive CAD/CMM systems
  • Turnkey design, fabrication, finishing, assembly
  • Traceability/ certification/ testing
  • Build-to-print machined & assemblies complete
  • Raw materials in stock for common manufactured hoses & gaskets to shorten lead times


  • Large-part precision machining to 120″
  • Complex configuration inspection
  • Exotic alloy machining
  • Internet link to customer part database
  • Ship to stock
  • Global sourcing of components, processes & materials
  • ITAR process & controls


  • AS9100/ ISO9001 Certified
  • Boeing Approved QMS as defined by D1-4426
  • Nadcap – Fluid Distribution Systems as Listed on QML
  • FAA-TSO authorization
  • FAA AC 00-56B


  • Registered with DLA (Defense Logistics Agency)
  • Boeing Inspection Delegations
  • Boeing Approved Fabrication – High Strength Low-Alloy Steel
  • Honeywell Approved – Fabrication & Inspection Delegation


  • 100% complete build to print responsibility acceptance
  • Added value can be realized by our proximity to all processing facilities located in Southern California.
  • Value Add Manufacturing/Distributor for OEM Titeflex Medium- & High-Pressure Hoses (Build on Demand)


We consistently invest in the latest technology and equipment to assure the capabilities needed to meet the demands of the industry.

  • State-of-the-art ERP system
  • Real-time tracking
  • Design/materials assessment
  • Turnkey processing
  • Assembly/finishing to final


Water Jet
  • One OMAX Waterjet
  • 55″ X 100″ bed with 50 HP pump, 60,000 PSI NOZZLE, Tilt-A-Jet head
CNC Knife
  • One ATOM 3015, Cutting area (120″ x 61″)
  • Two BRIDGEPORT (12″ X 42″ travel), 2 HP
Die Presses
  • One ATOM 22 Ton
CNC Milling Centers
  • Three HAAS VF-4SS, (20″ X 50″ travel) 4 Axis 10,000 rpm spindle, 30 HP, 40 taper
  • One HAAS VF-6, (64″ X 32″ travel) 5 Axis 10,000 rpm spindle 30, HP 40, taper
  • One HAAS EC-1600YZT, (64″ X 50″ travel) 4 Axis 6,000 rpm spindle, 30, HP 50 taper
  • One HAAS VF-10, (120″ X 32″ travel) 10,000 rpm spindle, 45 HP, 50 taper
CNC Turning Centers
  • One HAAS ST-10, 14″ turning diameter with 12-position tool holder, (with Haas Bar Feeder) 15 HP
  • One HAAS ST-20, 15″ turning diameter with 12-position tool holder, (with Haas Bar Feeder) 20 HP
  • One HAAS SL-30TL, 21″ turning diameter with 12-position tool holder, (with Haas Bar Feeder) 30 HP, with live tooling
  • One HAAS ST-30, 21″ turning diameter with 12-position tool holder, (with Haas Bar Feeder) 30 HP, with LNS steady rest
  • One HAAS ST-40LBB, 25″ turning diameter with 12-position tool holder, 80″ length of cut, big bore 55 HP, with LNS steady rest
Inspection Equipment
  • One MITUTOYO Model B-231 Coordinate Measuring Machine (X=28″ Y=24″ Z=18″) – IK 5000 Software
  • One MITUTOYO Model BN715 Coordinate Measuring Machine (X=24”, Y=60”, Z=28”) – CMM Manager Software
  • One ROMER ARM, 4ft arm, mobile inspection – Polyworks Software
  • One WILSON Hardness Machine “Rockwell” – A, B and C Scales
  • Three Precision surface plates from 36″ to 60″
  • One 14″ STI Optical comparator using M2 Vertical Software
  • One TESA 28” Electronic Height Gauge
CAD/CAM Software
Mastercam Logo
  • Mastercam X7 CAD/CAM thru full 5 Axis 
SolidWorks Logo
  • 3D CAD design & analysis software by Dassault Systemes
  • Used for shop model creation and analysis
CMM Manager
CMM Manager
  • Metrology software by NIKON
  • Used on DCC CMM for tight tolerance part inspection
  • Metrology software by InnovMetric
  • Used on Romer Arm for part inspection
E2 MFG System
  • Shoptech E2 Job Tracking software


Phone: +1 714-223-5401


Address: 3050 Enterprise St., Brea, CA 92821

We’ve recently moved! You can watch our big moving day in the video below.

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