FasNSeal, FasNSeal 2, and FasNSeal Flex

Single-wall and double-wall special gas vent systems.

All FasNSeal (single-wall) vent lengths and components feature patented built-in mechanical locking band and triple-lipped directional gaskets. All pipes and components are engineered with smooth clean welds located 90° from mechanical locking bands. This construction feature allows for ease of installation. The ½" air space between the inner and outer wall on FasNSeal W2 helps to reduce the clearance to combustibles in addition to creating a heat shield for additional safety.

All FasNSeal components which come in contact with exhaust gases and condensates are now silicone free. This important design and manufacturing feature greatly reduces the chances of system breakdown and failure. The main problems with silicone are there are too many adhesion factors which are very difficult to control and the process of binding similar materials with an epoxy, which can weaken the bond over time.

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boiler service

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Our complete line of boiler room equipment includes a wide range of boilers, burners, hot water heaters, feedwater systems, blowdown systems, fuel efficient equipment, control systems, oil heaters, and stack systems.

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M&G Duravent specializes in professional quality venting products such as exhaust stacks, vents, B-vents and chimneys.

  • Boiler exhaust stack from 3" to 30", including FAS N SEAL 5/3 stack
  • DuraStack (Pressurized stack)
  • Grease duct (UL approved)