PolySight composite sight glass

Product Description

polysight tubesPolySight™ composite tubing is a perfect alternative to conventional sight glass. Polygon engineers developed PolySight™ years ago for use with oil reservoir systems. The extra strength of these filament wound composites will keep PolySight™ tubes from denting or chipping. Thanks to their high strength, low cost and light-weight characteristics, they are ideal substitutes for most of today's metal and thermoplastic products. The distinct translucent benefits are a result of Polygon's design and manufacturing strengths, which work to your advantage when used in highly-pressurized, critical oil systems.

Product Advantages

Polygon's composite construction benefits also extend to an advanced corrosion resistance nature. Acids, moisture, salt water and other corrosive environments will inhibit performance and longevity in most other products. PolySight™ composite tubing will withstand even the harshest of conditions.

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PolySight™ Benefits & Value

Significant weight reduction is another benefit of PolySight™ composite tubing. Steel, brass and even aluminum are all substantially higher in weight than composites. And shipping costs will be less along with material handling and assembly.


Any ratings are typical for design purposes. Your design parameters may affect final ratings. Consult with a Polygon sales engineer for guidance. Final testing and approval is the customer's responsibility for their application. This information is derived from our testing and published data. There is no assurance of these properties, or warranty provided that these products are suitable for any particular purpose or operational situation.

Polygon certifies that their product will be free from material defect. Polygon will not accept any liability for loss, damages, or costs from use or misuse of our products.

Specifications are subject to change, and may be affected by our continual process of improvement. Changes may be made without prior announcement.