Medium-Duty Bi-Directional Compact Piston Seal with Wear Rings
Squeeze-type piston seal with integrated L-shaped wear rings for use on vertical or no-drift piston. Requires split piston design for smaller diameters for easier fitment. Compact design includes piston wear ring for small axial seal height, reducing piston height, weight and cost.
mineral oil-based fluids, fire-resistant water-based hydraulic fluids including HFA and HFB, sea water, biodegradable fluids, vegetable oils, bio-diesels, and most modern hydraulic fluids
Duralast 4403
8,000psi (520bar)
14,500psi (1000bar)
-22°F to 260°F (-30°C to 125°C)
1.6ft/s (0.5m/s)
same as Duralast 4203
Duralast 8166
3,800psi (260bar)
5,000psi (350bar)
-4°F to 392°F (-20°C to 200°C)
3.2ft/s (1.0m/s)
fire-resistant fluids, phosphate esters, mineral oils, greases, and most inorganic acids and chemicals, gasoline and gasoline/alcohol blends, hard vacuum
Duralast 5101
3,800psi (260bar)
5,000psi (350bar)
-22°F to 212°F (-30°C to 100°C)
1.6ft/s (0.5m/s)
mineral-oil based hydraulic fluids, silicone greases, petroleum-based oils, water and alcohols
Duralast 6146
3,800psi (260bar)
5,000psi (350bar)
-30°F to 302°F (-35°C to 150°C)
2.0ft/s (0.7m/s)
excellent heat and oil resistance, including exposure to such oil additives as detergents, anti-oxidants and anti-wear agents
Additional standard materials available: High-performance polyurethanes, NBR (Nitrile), FKM, Viton®, HNBR, EPDM, Aflas®, Hytrel®, Silicone, low- and high-temperature, FDA-compliant seal material grades, PTFE, filled PTFE®, engineered thermoplastics and proprietary specialized Duralast™, Duraloy™, and Permachem™ materials.
*Important Note: Maximum values above depend on extrusion gap, clearances, seal material, media, temperatures, pressures, surface speed, dynamic running surface finish and working environment. Seals cannot be operated at their upper ratings at the same time. Pressure ratings can be increased by reducing clearances. For pressure above specified operating pressure, please contact engineering@ahpseals.com