G603 Series Front Mount Flexible Vinyl Sight Gage - 360° Viewing

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The G603 Series front mount closed circuit sight gage is mounted securely with end blocks made from aluminum.  These end blocks are connected with a clear,  flexible tubular vinyl sight providing 360° viewing of the fluid level.  The flexible vinyl sight bends easily to conform to irregular or cylindrical shaped reservoir bodies.

Standard Features:

  • Centerline lengths from 3 to 12 inches
  • Front mount
  • .88 inch square end blocks machined from aluminum bar stock
  • .50 inch diameter tubular sight
  • 360° of viewing fluid level
  • 1/2-20UNF mounting studs accommodate reservoir wall thicknesses up to .62 inches
  • Suitable for use with most hydraulic and machine lubricating oils

Standard Materials:

  • Aluminum end blocks and mounting bolts
  • Vinyl tubular sight
  • Buna N seals


  • Not recommended for use with water, steam, acidic fluids, caustic fluids and volatile fluids


Temperature & Pressure Ratings

  • 150°F (65°C) maximum operating temperature
  • 5 psi (34 kPa) maximum operating pressure

Product Options

Common Modifications Available

  • End blocks made from brass material
  • Seal Material: Butyl, Fluorocarbon (Viton®) or Ethylene Propylene (EPDM)
  • Centerline lengths [600 inch (15240 mm) maximum]

Custom Modifications Available

  • Mounting Bolt Threads: 1/2-13UNC, M10x1.50, or M12x1.75

Minimum quantities may apply.

Related Products

When your reservoir geometry provides a straight wall for mounting the sight gage, LDI offers rigid nylon sight gages with similar viewing angles.

If your application exceeds the capabilities of vinyl and nylon, consider metallic LDI products designed for viewing or monitoring fluid media.

Your fluid storage system is not complete until you define the reservoir.  Off-the-shelf or customized to your specifications, consider LDI your source for:



LDI - Corporate  Click for map LDI   Click for map
Precision Machining & Assembly Fabrication & Assembly
1864 Nagle Ave. 12901 Jim Dhamer Dr.
Manitowoc, WI  54220 Huntley, IL  60142
PH: 920.682.6877                         
FAX: 920.684.7210                         



Our talented team of degreed and professionally certified Engineers, Quality Assurance, Production and Customer Service staff have many years of experience in the industry.  Their attention to detail and ability to collaborate with our clients to solve their problems is reflected in the 50+ years we have been in business.


Customer Service: 

920.682.6877, option 4

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