Plastic Applications in the Underwater Seismology Industry

PMI provides machined plastics for use in a variety of seismic applications.  Combining high strength, exceptional corrosion resistance, and insulating properties, plastic materials are ideal for underwater components and protective equipment.  Dimensionally stable with high acoustic efficiency, plastics will not interfere with electronic or mechanical signal transmissions.

Structural Components

Plastics maintain their dimensional and chemical stability under severe conditions. Resistance to heat, steam, saltwater, and chemicals makes many plastics ideal for underwater equipment seals, connectors, insulators, and electrical components.

Bearing and Wear Components

Plastics can provide low friction, dimensional stability with the wide temperature range and low thermal expansion required for bearings, wear pads, thrust and rotary slides, gears, container liners, and other impact-resistant components.

High-frequency Applications

Many plastic materials provide exceptional dimensional stability and excellent sound transmission characteristics, making them well-suited for microwave, radar, and other high-frequency applications.
To learn more about plastic machining in the Underwater Seismology Industry or for an affordable quote, please e-mail us, call us at 888-761-4262, or use our contact form.

Preferred Plastics for the Underwater Seismology Industry

The following plastics are frequently used in the Underwater Seismology Industry:

  • Celazole®
  • PEEK
  • Rexolite®
  • Ryton®
  • Ultem®
For help selecting the optimal material for your application contact the PMI technical support team.  We understand the unique advantages and limitations of each plastic material, and can help you make the best choice for cost, function, and durability.


Semi-crystalline material with extremely low wear and good rigidity, toughness, and dimensional stability.  It has low moisture absorption and is easy to machine.

Learn More About Acetal


Excellent dimensional stability and strength at the highest sustained temperatures.


Semi-crystalline material that provides exceptionally high temperature performance with good wear and friction properties.  Easily machined, formed, and welded, it is maintenance-free and wipes clean.  Provides design versatility with excellent dimensional stability, has good chemical resistance, and won’t degrade with exposure to water or steam.

Learn More About PEEK


Cross-linked polystyrene with unusually stable electrical properties at high frequencies.

Ryton® PPS

Exceptional chemical resistance, compressive strength, and heat dissipation.

Learn More About Ryton®


Good dielectric properties, dimensional stability, and low thermal expansion.

Learn More About Ultem®