440/440M External Single Component Seal
Metal-Free Sealing for Corrosive and Sensitive Applications
The Chesterton 440/440M is designed for reliable sealing in corrosive environments without any metal parts in contact with the fluid. It serves as a cost-effective alternative to exotic-metal seals and prevents damage to glass-lined shafts. Hydraulically balanced and sleeve-free, this versatile seal fits pump casings easily while maintaining tight sealing performance in general service and corrosive conditions.
Its robust construction supports extended service life, reducing maintenance frequency and downtime. Easy installation and compatibility with a wide range of equipment make it a practical choice for operations seeking durability, efficiency, and consistent performance in demanding industrial applications across multiple industries.
Not Sure What You’re Looking For? Contact Us
Product Features
✔ Made to replace expensive exotic metal seals
✔ Perfect for glass lined shafts
✔ One-piece, drive-ring clamp for easy installation/positioning
5 key seal design features
✔ Balanced Design
✔ Non-Fretting
✔ Monolithic Seal Faces
✔ Stationary Design
✔ Protected Springs
Technical Data ↓
-
25 mm to 115 mm (0.937 inch to 4.5 inch)
-
711 mm (28") Hg Vacuum to 10 bar g (50 psig)
-
-55 to 300 °C (-67 to 570 °F)
-
4000 fpm
-
20 m/s
-
See back page for actual material limits by type of elastomer