886HT High-Temperature Metal Bellows Single Seal

Designed for High-Temperature Services

​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​In applications where the process temperature exceeds elastomer capabilities, metal bellows mechanical seals with graphite secondary seals are a good sealing option. The 886HT Bellows Single Seal is designed for high-temperature services typically found in chemical and petrochemical processes. Graphite secondary seals replace O-Rings to achieve the higher temperature requirements. ​

Advanced bellows design distributes pressure uniformly across the span of the bellows plate to reduce stress and minimize weld fatigue. Component design replaces most OEM seals.

 

Product Features

  • Graphite secondary seals for high-temperature performance
  • Advanced bellows design for maximum cycle life
  • Rotary bellows for enhanced performance in slurry and particulate services
  • Hydraulically-balanced seal design
  • Blister-resistant carbon
  • Proven heat-treated AM 350 bellows construction
  • Fits a wide range of pumps and other rotating equipment

Technical Data

Size Range 25 mm to 65 mm (1 inch to 2.625 inch )

Materials

 

Operating Conditions

Pressure Limit Vacuum 711 mm Hg Vacuum ( 28 in Hg vacuum )
Pressure Limit Rotating 200 PSIg ( 14 BARg )
Temperature Max 750 °F ( 400 °C )
Notes

Sealed pressure capabilities are dependent on the fluid sealed, temperature, speed and face combination. Consult Chesterton Mechanical Seal Engineering to confirm suitability for your application and to receive a product recommendation.

 

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