886HT High-Temperature Metal Bellows Single Seal
High‑Temperature Solution for Tough Process Conditions
The Chesterton 886HT is designed for applications where standard elastomer seals can't perform. With graphite secondary seals instead of O-rings, it delivers reliable performance in extreme temperatures common in chemical and petrochemical processing. Its metal bellows construction ensures uniform pressure distribution, reducing stress and extending seal life.
Built with a hydraulically balanced rotary bellows and heat-treated AM 350 metal components, the 886HT handles slurry, abrasive, and particulate-laden services while resisting deformation under high loads.
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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
5 key seal design features
✔ Balanced Design
✔ Non-Fretting
✔ Monolithic Seal Faces
✔ Stationary Design
✔ Protected Springs
Technical Data ↓
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25 mm to 65 mm (1 inch to 2.625 inch)
Operating Conditions ↓
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711 mm (28") Hg Vacuum to 14 bar g (200 psig)
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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.