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MCB11

Metal-cased high-pressure fluoropolymer rotary shaft seal

This seal design incorporates an anti-extrusion and support ring for the seal lip making it capable of handling high pressures. This design creates very low parasitic friction under load and adds much lower heat generation than most seal designs. It is typically used to provide a low leak solution for hydrostatic transmissions and high-pressure rotary equipment. It is capable of sealing pressure at higher speeds, both lubricated and unlubricated.

Operating Range

Material	Continuous Pressure	Max.Pressure Spike	Temperature	Surface Speed	Application	Dry-run	PV-Rating
Permachem 6233	500psi (35bar)	750psi (50bar)	-80 to 400°F (-60 to 200°C)	Up to 5,000 fpm (25m/s)	standard oil lubrication, high waterbased fluids	YES	10
Permachem 6235	500psi (35bar)	750psi (50bar)	-80 to 400°F (-60 to 200°C)	Up to 5,000 fpm (25m/s)	Soft shaft material, gaseous media, FDA compliant	YES	10
Duraloy 4736	500psi (35bar)	750psi (50bar)	-80 to 400°F (-60 to 200°C)	Up to 5,000 fpm (25m/s)	low wear and abrasion, long service life	YES	10

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MCB12

Metal-cased single fluoropolymer lip rotary shaft seal

This high-performance seal design incorporates a formed seal lip, mechanically locked into a metal body. This design creates very low parasitic friction under load and adds much lower heat generation than most seal designs. This allows the seal to be used successful at higher peripheral speeds, where heat generation is the primary mode of failure for most seals. An integrated O-ring on the OD of the seal provides positive static sealing between the seal and the bore. It is typically used in lubricated or unlubricated high-speed and low pressure sealing applications. It is typically used as a seal for gearboxes or mixers in a dirty or dusty…

Operating Range

Material	Continuous Pressure	Max.Pressure Spike	Temperature	Surface Speed	Application	Dry-run	PV-Rating
Permachem 6233	110psi (7.6bar)	300psi (20bar)	-58 to 400°F (-50 to 200°C)	Up to 5,000 fpm (25m/s)	standard oil lubrication, high waterbased fluids	YES	5
Permachem 6235	110psi (7.6bar)	300psi (20bar)	-58 to 400°F (-50 to 200°C)	Up to 5,000 fpm (25m/s)	Soft shaft material, gaseous media, FDA compliant	YES	5
Duraloy 4736	110psi (7.6bar)	300psi (20bar)	-58 to 400°F (-50 to 200°C)	Up to 5,000 fpm (25m/s)	low wear and abrasion, long service life	YES	5

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P50

Heavy-Duty Bi-Directional Piston Seal with Live Back-Up Rings

Squeeze-type piston seal for use on vertical or no-drift piston. Positive actuated live back-up rings to eliminate seal extrusion in high-pressure applications or larger extrusion gaps. Requires split piston design for smaller diameters for easier fitment.

Operating Range

Material	Operating Pressure up to	Maximum Pressure up to	Temperature	Surface Speed up to	Fluid, Media Compatability
Duralast 4203	5,000psi (350bar)	10,000psi (700bar)	-22°F to 260°F (-30°C to 125°C)	1.6ft/s (0.5m/s)	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

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P51

Heavy-Duty Bi-Directional Piston Seal with Live Back-Up Rings

Squeeze-type piston seal for use on vertical or no-drift piston. Positive actuated live back-up rings to eliminate seal extrusion in high-pressure applications or larger extrusion gaps. Rubber energizer allows for an easier fit on one-piece pistons.

Operating Range

Material	Operating Pressure up to	Maximum Pressure up to	Temperature	Surface Speed up to	Fluid, Media Compatability
Duralast 4203	5,000psi (350bar)	10,000psi (700bar)	-22°F to 260°F (-30°C to 125°C)	1.6ft/s (0.5m/s)	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

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P52

Ultra-High Pressure Bi-Directional Piston Seal with Load-Bearing Live Back-Up Rings

Heavy-duty squeeze-type piston seal for use on vertical or no-drift piston. L-shaped heavy-duty back-up rings handle larger clearances, misalignment and high pressures and are also easier to assemble. Maximum pressure rating 10,000psi dynamic and 20,000psi static. Requires split piston design for smaller diameters for easier fitment.

Operating Range

Material	Operating Pressure up to	Maximum Pressure up to	Temperature	Surface Speed up to	Fluid, Media Compatability
Duralast 4203	5,000psi (350bar)	10,000psi (700bar)	-22°F to 260°F (-30°C to 125°C)	1.6ft/s (0.5m/s)	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

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P53

Premium Ultra-High Pressure Bi-Directional Piston Seal with Load-Bearing Live Back-Up Rings

Heavy-duty squeeze-type no-drift piston seal, L-shaped heavy-duty load bearing active back-up rings handle larger clearances, elevated temperatures, misalignment and high pressures. Rubber energizer allows for fitting on a one-piece piston design.

Operating Range

Material	Operating Pressure up to	Maximum Pressure up to	Temperature	Surface Speed up to	Fluid, Media Compatability
Duralast 4203	5,000psi (350bar)	10,000psi (700bar)	-22°F to 260°F (-30°C to 125°C)	1.6ft/s (0.5m/s)	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

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P53

Premium Ultra-High Pressure Bi-Directional Piston Seal with Load-Bearing Live Back-Up Rings

Heavy-duty squeeze-type no-drift piston seal, L-shaped heavy-duty load bearing active back-up rings handle larger clearances, elevated temperatures, misalignment and high pressures. Rubber energizer allows for fitting on a one-piece piston design.

Operating Range

Material	Operating Pressure up to	Maximum Pressure up to	Temperature	Surface Speed up to	Fluid, Media Compatability
Duralast 4203	5,000psi (350bar)	10,000psi (700bar)	-22°F to 260°F (-30°C to 125°C)	1.6ft/s (0.5m/s)	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

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P54

Medium-Duty Bi-Directional Piston Seal with Live Wear Rings

Squeeze-type piston seal for use on vertical or no-drift piston. Rubber energizer allows for easier fit on a one-piece piston. Live wear rings handle greater side load and extrusion gaps. Compact design includes piston wear ring for small axial seal height, reducing piston height, weight and cost. Ideally suited to cylinders constantly operating at a vertical angle.

Operating Range

Material	Operating Pressure up to	Maximum Pressure up to	Temperature	Surface Speed up to	Fluid, Media Compatability
Duralast 4203	5,000psi (350bar)	10,000psi (700bar)	-22°F to 260°F (-30°C to 125°C)	1.6ft/s (0.5m/s)	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

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MCB11

MCB12

OCT

OCT

OR

OR

P50

P51

P52

P53

P53

P54

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