Mechanical gauges are devices used to measure pressure, temperature, moisture, and fluid levels. They can be both mechanically and electro-mechanically powered, with analog or digital displays. Gauges are critical for monitoring and controlling operations in everything from automotive and industrial manufacturing to aerospace, marine, defense, and medical equipment. 

With more than 80 years of experience, Seal Fast manufactures and distributes superior-quality gauges for process piping, plumbing, and much more. Our gauges are engineered to provide reliable pressure and temperature monitoring and control to meet the particular needs of virtually any application. 

Gauges from Seal Fast

Seal Fast’s extensive selection of gauges includes:

  • Thermometer
  • Dry Gauges
    • Dry Gauges: Seal Fast’s dry gauges are used to gauge pressure in low-moisture industrial applications, such as air compressors and pneumatic systems.
  • Liquid Filled Gauges
    • Liquid-Filled Gauges: Liquid-filled gauges provide accurate measurement of high-stress pressure points. Our quality liquid-filled gauges are ideal for measuring vibrations, pressure peaks, and high-speed load pressure. 
  • Heavy Duty Liquid Filled Gauge
    • Heavy Duty Liquid-Filled Gauges: Seal Fast heavy duty liquid-filled pressure gauges are designed to withstand temperature fluctuations, pressure, impact, and vibration common in heavier industrial settings. 
  • Panel Mount Liquid Filled Gauges
  • Process Gauges
    • Process Gauges:  Our process gauges are specially designed to withstand harsh conditions and corrosive chemicals such as petroleum, acids, and alkalies in the chemical and oil industries.
  • Ammonia Gauge
    • Ammonia Gauges: Ammonia refrigeration applications require specialized gauges that can accurately measure both pressure and temperature in harsh conditions. Our ammonia gauges are highly durable and exceptionally accurate. 
  • Oxygen Pressure Gauge
    • Oxygen Gauges:  Seal Fast’s oxygen gauges are used to monitor the internal and outgoing pressure in oxygen tanks. They are perfect for heavy industrial equipment, such as hydraulic systems.


Seal Fast offers a variety of gauge accessories designed to enhance the operation of different types of gauges. Our gauge accessories include: 

  • Thermowells: Seal Fast thermowells are engineered to protect temperature sensors such as thermocouples, thermistors, and bimetal thermometers from pressure, impact, abrasion, and corrosion.
  • Siphons: Siphons protect pressure sensors from steam and other high-temperature media.
  • Pressure SnubbersOur pressure snubbers are designed to moderate pressure fluctuations caused by reciprocating pumps, in order to ensure reading accuracy. 
  • Needle ValvesNeedle valves are an excellent option for applications with variable flow. They provide flow regulation, in order to enhance operational efficiency and speed in general industrial applications.

Types of Gauges

Pressure gauges are available in a wide variety of designs and configurations, depending on their intended use. They can be used to measure several types of pressure, including atmospheric, absolute, differential, and overpressure. Gauges are divided into two distinct categories: analog and digital. 

  • Analog gauges are the most traditional design, with mechanical devices and needles used to convey pressure values. They are highly dependable, and are ideal for applications in which the standard operating pressure is approximately half the gauge’s full capacity. 
  • Digital gauges use electronic equipment coupled with diaphragms, strain gauges, and other sensors. Rather than using an analog display, they use a digital display that is ideal for applications requiring a high degree of precision in their readings. 

Applications and Industries

Seal Fast gauges are incorporated into a wide range of industries and applications, including: 

  • Industrial Operations: Industrial operations use pressure and temperature gauges to monitor the safety and efficiency of oxygen and gas tanks, furnace operations, and cooling and refrigeration systems. 
  • Hydraulic and Pneumatic Systems: Pressure and temperature gauges are used to ensure smooth, efficient pneumatic and hydraulic operations. 
  • Compressors and Regulator Machines: Compressors and regulators use pressure gauges to maintain steady pressure, volume, and flow for ideal operating conditions.
  • Chemical and Petrochemical: Chemical and petrochemical operations rely on fine temperature and pressure control to ensure safe operations and superior product quality. 
  • Machinery: Machinery such as agricultural equipment, automotive equipment, and industrial machinery uses gauges to ensure safe pressure and temperature levels. 
  • Construction: Pressure and temperature gauges help users monitor construction equipment to ensure safe and reliable operation under heavy loads and extreme conditions.
  • Food & Beverage: Fine temperature and pressure control are crucial for product quality and adherence to industry regulations.
  • Pulp & Paper Industries: Volatile chemicals and high temperatures are common in the industry and must be closely monitored to ensure product quality and worker safety. 

Contact Seal Fast for Your Gauge Applications

Seal Fast is an industry leader in the development, manufacture, and distribution of quality gauges, valves, couplings, fittings, and PVC hoses for customers in numerous industries. To learn more about our products and services, request our product catalog or contact our experts today!