Floating seal arrangement

Details Floating seal arrangement Floating seal arrangement

F - Mech Eng,Light,Heat,Weapons

15

B

F15B 15/20 (2006.01) F16J 15/16 (2006.01) F16J 15/44 (2006.01)

Patent

CA 2042238

Abstract of the Disclosure: A rod seal for a linear hydraulic or pneumatic actuator cylinder includes a seal ring that has a bore that closely matches the diameter of the rods, proximal and distal cylindrical portions and a central annular flange. A seat in the actuator cylinder distal end assembly has proximal and distal cylindrical portions and a central void to receive the rod seal ring proximal and distal portions and central flange respectively. A radial clearance is provided so that the rod seal ring can travel radially, at least for a limited distance, while the rod passes axially through it. Static elastomeric ring seals are provided in the proximal, distal and central portions, and define pressure balancing regions. The rod seal assembly can be constructed at low cost, yet achieve a high degree of sealing with low axial friction characteristics.

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