Rod seal Prädifa series B3, Ultrathan® | Product Series

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Outside Diameter (mm)

Element Height (mm)

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Minimum Working Temperature (C)

Maximum Working Temperature (C)

Seal Material

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Rod seal Prädifa series B3, Ultrathan® Rod seal Prädifa series B3, Ultrathan®

Rod seal Prädifa series B3, Ultrathan®

Where to Buy

Rod seal for hydraulic cylinders, single-acting, polyurethane u-cup design. For high-pressure applications. Robust seal profile for harshest operating conditions. ISO 5597, ISO 6020.

Technical Specifications

  • Thermal Application Type: Low Temperature (< -35 C), High Temperature (< 205°C), Standard Moderate Temperature (-35 to 100°C)
  • Media: Hydraulic
  • Polymer Material Options: Thermoplastic Polyurethane (TPU, Resilon®, Ultrathan®)
  • Maximum Operating Pressure: 400 bar, 250 bar, 200 bar
  • Minimum Operating Temperature: -45 to -20 °C
  • Maximum Operating Temperature: 80 to 110 °C
  • Maximum Surface Speed: 0.5 m/sec
  • Unit of Measure: Length: mm
  • Cushioning Mechanism: No
  • Pressure Rating: High Pressure (< 500 bar)
Safety Warning

Full Product Description

The B3 Ultrathan® rod seal is a U-ring with interference fit on the outer diameter. It is extremely wear-resistant, ensures reliable load holding performance and is suitable for high-pressure applications in hydraulics.

• Robust seal profile for harshest operating conditions.
• Extreme wear resistance.
• Easier installation.
• Insensitive to pressure peaks.
• High extrusion resistance.
• Excellent media resistance in case of suitable compound selection.
• Suitable compounds available for special requirements of the chemical process industry.
• Suitable compounds available for special requirements of the food processing industry.
• Dimensions according to ISO 5597.
• Installation in closed and undercut housings.
• Low compression set.
• Further dimensions of machined series with short lead times available.

Range of application:
Mainly for sealing piston rods and plungers in heavy-duty mobile and stationary hydraulics applications. The range of dimensions is primarily oriented to the requirements of ISO 5597 and ISO 3320 for housings and diameters.

The B3 rod seal is available in the following compounds:
P5008 - Industrial applications
P6000 - Heavy-duty
P5009 - Low temperatures
P5001 - Bio-degradable fluids
P5000 - Food applications (FDA approval)
P5010 - Light-duty

Related Documents

Literature and Reference Materials
Hydraulic Seals--PTD3350
Compound Data Sheet TPU P5008
Installation Guidelines for Rod Seals--PTD3350
Storage and Cleaning of Elastomer Seals--PTD3032
Ultrathan® --Rod seal B3--PTD3350
Product Demos & Tutorials
How to Properly Store and Clean Elastomer Seals
Mixing the right ingredients: Material Development at Parker-Prädifa
Communities, Blogs & Industry Links
Industry Hydraulics
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Products Inside Diameter (mm) Outside Diameter (mm) Element Height (mm) Groove Width Minimum Working Temperature (C) Maximum Working Temperature (C) Seal Material
B3A015P5008 100 115 9 10 -35 100 P5008
B3A018P5008 100 120 11.5 12.5 -35 100 P5008
B3A020P5008 100 120 14.5 16 -35 100 P5008
B3A020P6000 100 120 14.5 16 -35 110 P6000
B3A503P5008 105 120 10 11 -35 100 P5008
B3A503P5009 105 120 10 11 -45 95 P5009
B3A505P5008 105 125 14.5 16 -35 100 P5008
B3A511P5008 105 120 11.4 12.5 -35 100 P5008
B3A605P5000 106 116 7.3 8 -20 100 P5000
B3B024P5008 110 125 9 10 -35 100 P5008
B3B025P5008 110 125 9.6 10.6 -35 100 P5008
B3B025P5009 110 125 9.6 10.6 -45 95 P5009
B3B029P5008 110 130 12 13 -35 100 P5008
B3B030P5008 110 130 14.5 16 -35 100 P5008
B3B044P5008 114.3 130.18 9.53 10.3 -35 100 P5008
B3B052P5009 115 135 11.5 12.5 -45 95 P5009
B3C017P4300 120 135 14.5 16 -30 110 P4300
B3C017P5008 120 135 14.5 16 -35 100 P5008
B3C017P5009 120 135 14.5 16 -45 95 P5009
B3C040P5008 120 140 15 16 -35 100 P5008
B3C040P5010 120 140 15 16 -30 100 P5010
B3C040P6000 120 140 15 16 -35 110 P6000
B3C224P5008 125.1 145 12 13 -35 100 P5008
B3C244P5008 125 145 12 13 -35 100 P5008
B3C244P6000 105 113 11.5 12.5 -35 110 P6000
B3C245P5008 125 145 14.5 16 -35 100 P5008
B3C427P5212 127 142.88 9.53 10.3 -35 100 P5212
B3D011P5000 130 150 11 12 -20 100 P5000
B3D049P5008 130 150 12 13 -35 100 P5008
B3D050P5008 130 150 15 16 -35 100 P5008
B3E055P5008 140 155 9.6 10.6 -35 100 P5008
B3E060P5008 140 160 14.5 16 -35 100 P5008
B3E060P6000 140 160 14.5 16 -35 110 P6000
B3E065P5008 145 165 14.5 16 -35 100 P5008
B3F070P5008 150 170 15 16 -35 100 P5008
B3F072P5008 152.4 171.45 12.7 13.5 -35 100 P5008
B3F075P5000 157.5 167.5 7.3 8 -20 100 P5000
B3G080P5008 160 180 15 16 -35 100 P5008
B3G080P6000 160 180 15 16 -35 110 P6000
B3G085P5008 160 185 18.2 20 -35 100 P5008
B3H020P5008 170 200 18.2 20 -35 100 P5008
B3J005P5008 180 205 18.2 20 -35 100 P5008
B3J020P5000 180 200 15 16 -20 100 P5000
B3J020P5008 180 200 15 16 -35 100 P5008
B3J020P6000 180 200 15 16 -35 110 P6000
B3K005P5008 190 210 15 16 -35 100 P5008
B3L020P5000 200 220 14.6 16 -20 100 P5000
B3L020P5008 200 220 14.6 16 -35 100 P5008
B3L025P5008 200 225 18.2 20 -35 100 P5008
B3L030P5008 200 230 18 19 -35 100 P5008
B3L110P5008 210 230 15 16 -35 100 P5008
B3M040P5000 220 240 14.6 16 -20 100 P5000
B3M040P5008 220 240 14.6 16 -35 100 P5008
B3M050P5008 220 250 22.7 25 -35 100 P5008
B3M050P6000 220 250 22.7 25 -35 110 P6000
B3M070P5008 225 250 18 19 -35 100 P5008
B3N580P5008 250 280 22.7 25 -35 100 P5008
B3O080P5000 260 280 15 16 -20 100 P5000
B3O080P5008 260 280 15 16 -35 100 P5008
B3P005P5000 280 300 15 16 -20 100 P5000
B3P005P5008 280 300 15 16 -35 100 P5008
B3P010P5008 280 310 22.7 25 -35 100 P5008
B3Q320P5208 300 320 16 17.5 -20 100 P5208
B30412P5008 4 12 6 7 -35 100 P5008
B30613P5008 6 13 5 5.6 -35 100 P5008
B30613P5009 6 13 5 5.6 -45 95 P5009
B30613P6000 6 13 5 5.6 -35 110 P6000
B30614P5008 6 14 5.7 6.3 -35 100 P5008
B30814P5008 8 14 5 5.6 -35 100 P5008
B30816P5008 8 16 5.7 6.3 -35 100 P5008
B30816P5009 8 16 5.7 6.3 -45 95 P5009
B30914P5008 9 14.5 5 5.6 -35 100 P5008
B30916P5008 9 16 5.7 6.3 -35 100 P5008
B31015P5008 10 14 3.7 4.5 -35 100 P5008
B31015P6000 10 14 3.7 4.5 -35 110 P6000
B31016P5008 10 16 4.5 5.2 -35 100 P5008
B31016P5009 10 16 4.5 5.2 -45 95 P5009
B31017P5008 10 17 5.7 6.3 -35 100 P5008
B31018P5008 10 18 5.7 6.3 -35 100 P5008
B31018P5010 10 18 5.7 6.3 -30 100 P5010
B31115P6000 11 15 3.7 4.5 -35 110 P6000
B31210P5007 12 19 4.7 5.5 -35 80 P5007
B31211P5007 12 19 5 5.6 -35 80 P5007
B31211P5008 12 19 5 5.6 -35 100 P5008
B31211P6000 12 19 5 5.6 -35 110 P6000
B31212P5008 12 20 5.7 6.3 -35 100 P5008
B31212P5010 12 20 5.7 6.3 -30 100 P5010
B31212P5600 12 20 5.7 6.3 -20 80 P5600
B31222P5008 12 22 7.3 8 -35 100 P5008
B31222P5600 12 22 7.3 8 -20 80 P5600
B31421P5008 14 21 5 5.6 -35 100 P5008
B31421P5010 14 21 5 5.6 -30 100 P5010
B31421P5012 14 21 5 5.6 -38 100 P5012
B31421P6000 14 21 5 5.6 -35 110 P6000
B31422P5008 14 22 7.3 8 -35 100 P5008
B31422P5009 14 22 7.3 8 -45 95 P5009
B31424P5008 14 24 7.3 8 -35 100 P5008
B31525P5008 15 25 8 9 -35 100 P5008
B31620P5008 16 22 5 5.6 -35 100 P5008
B31620P6000 16 22 5 5.6 -35 110 P6000
B31624P5007 16 24 5.7 6.3 -35 80 P5007
B31624P5008 16 24 5.7 6.3 -35 100 P5008
B31624P5009 16 24 5.7 6.3 -45 95 P5009
B31624P5010 16 24 5.7 6.3 -30 100 P5010
B31624P5051 16 24 5.7 6.3 -35 85 P5051
B31624P5080 16 24 5.7 6.3 -40 85 P5080
B31626P5008 16 26 7.3 8 -35 100 P5008
B31824P5008 18 24 5 5.6 -35 100 P5008
B31825P5008 18 26 5.7 6.3 -35 100 P5008
B31825P5010 18 26 5.7 6.3 -30 100 P5010
B31826P5008 18 25 5 5.6 -35 100 P5008
B31826P5010 18 25 5 5.6 -30 100 P5010
B31827P5008 18 28 7.3 8 -35 100 P5008
B31828P5008 18 28 8 9 -35 100 P5008
B31905P5008 19.05 25.4 6.35 7.140 -35 100 P5008
B32026P5008 20 26 5 5.6 -35 100 P5008
B32028P5001 20 28 5.7 6.3 -35 100 P5001
B32028P5008 20 28 5.7 6.3 -35 100 P5008
B32028P5010 20 28 5.7 6.3 -30 100 P5010
B32028P6000 20 28 5.7 6.3 -35 110 P6000
B32030P5001 20 30 7.3 8 -35 100 P5001
B32030P5008 20 30 7.3 8 -35 100 P5008
B32038P5001 28 38 7.3 8 -35 100 P5001
B32038P5008 28 38 7.3 8 -35 100 P5008
B32225P5008 22 28 5 5.6 -35 100 P5008
B32225P6000 22 28 5 5.6 -35 110 P6000
B32229P5008 22 29 5.2 5.8 -35 100 P5008
B32230P5008 22 30 5.7 6.3 -35 100 P5008
B32230P5010 22 30 5.7 6.3 -30 100 P5010
B32232P5001 22 32 7.3 8 -35 100 P5001
B32232P5008 22 32 7.3 8 -35 100 P5008
B32232P5009 22 32 7.3 8 -45 95 P5009
B32430P5008 24 30 4.5 5.2 -35 100 P5008
B32525P5008 25 32 6 7 -35 100 P5008
B32525P6000 25 32 6 7 -35 110 P6000
B32532P5008 25 33 5.7 6.3 -35 100 P5008
B32532P5009 25 33 5.7 6.3 -45 95 P5009
B32532P5010 25 33 5.7 6.3 -30 100 P5010
B32533P5008 25 33 6.5 7.3 -35 100 P5008
B32533P5009 25 33 6.5 7.3 -45 95 P5009
B32534P5007 25 33 8 9 -35 80 P5007
B32535P5008 25 35 7.3 8 -35 100 P5008
B32535P5010 25 35 7.3 8 -30 100 P5010
B32537P5008 25 40 10 11 -35 100 P5008
B32539P5008 25 40 11 12 -35 100 P5008
B32636P5600 26 36 7 7.800 -20 80 P5600
B32836P5008 28 36 5.7 6.3 -35 100 P5008
B32836P5009 28 36 5.7 6.3 -45 95 P5009
B32837P5008 28 36 8 9 -35 100 P5008
B32837P5009 28 36 8 9 -45 95 P5009
B32838P5008 28 38 10 11 -35 100 P5008
B33002P5007 30 38 8 9 -35 80 P5007
B33002P5008 30 38 8 9 -35 100 P5008
B33002P5009 30 38 8 9 -45 95 P5009
B33003P5000 30 38 5.7 6.3 -20 100 P5000
B33003P5008 30 38 5.7 6.3 -35 100 P5008
B33003P5009 30 38 5.7 6.3 -45 95 P5009
B33005P5008 30 40 10 11 -35 100 P5008
B33020P5008 32 47 10 11 -35 100 P5008
B33040P5008 30 40 7.3 8 -35 100 P5008
B33040P5009 30 40 7.3 8 -45 95 P5009
B33040P5010 30 40 7.3 8 -30 100 P5010
B33205P5008 32 40 5.7 6.3 -35 100 P5008
B33206P5008 32 40 6 7 -35 100 P5008
B33240P5000 32 40 6.7 7.5 -20 100 P5000
B33240P5008 32 40 6.7 7.5 -35 100 P5008
B33242P5008 32 42 7.3 8 -35 100 P5008
B33242P5009 32 42 7.3 8 -45 95 P5009
B33242P5010 32 42 7.3 8 -30 100 P5010
B33243P5008 32 42 10 11 -35 100 P5008
B33245P5008 32 45 10 11 -35 100 P5008
B33506P5008 35 43 6 7 -35 100 P5008
B33506P6000 35 43 6 7 -35 110 P6000
B33544P5008 35 45 7 7.800 -35 100 P5008
B33544P5009 35 45 7 7.800 -45 95 P5009
B33545P5008 35 45 10 11 -35 100 P5008
B33644P5000 36 44 5.7 6.3 -20 100 P5000
B33644P5008 36 44 5.7 6.3 -35 100 P5008
B33644P5009 36 44 5.7 6.3 -45 95 P5009
B33646P5008 36 46 7.3 8 -35 100 P5008
B33646P6000 36 46 7.3 8 -35 110 P6000
B33800P5008 38 50 10 11 -35 100 P5008
B34002P5000 40 48 5.7 6.3 -20 100 P5000
B34002P5008 40 48 5.7 6.3 -35 100 P5008
B34003P5008 40 48 8 9 -35 100 P5008
B34004P5001 40 50 7.3 8 -35 100 P5001
B34004P5008 40 50 7.3 8 -35 100 P5008
B34004P5009 40 50 7.3 8 -45 95 P5009
B34004P5010 40 50 7.3 8 -30 100 P5010
B34005P5008 40 50 10 11 -35 100 P5008
B34006P5008 40 50 8 9 -35 100 P5008
B34022P5008 41.22 50.8 8.3 9.400 -35 100 P5008
B34043P5008 42.25 52 9.5 10.5 -35 100 P5008
B34050P5001 65 85 14.6 16 -35 100 P5001
B34050P5008 45 53 5.6 6.3 -35 100 P5008
B34050P6000 45 53 5.6 6.3 -35 110 P6000
B34502P5008 45 53 8 9 -35 100 P5008
B34553P5008 45 53 10 11 -35 100 P5008
B34554P5008 45 55 5.8 6.5 -35 100 P5008
B34555P4301 45 55 7.3 8 -30 110 P4301
B34555P5008 45 55 7.3 8 -35 100 P5008
B34555P5009 45 55 7.3 8 -45 95 P5009
B34555P6000 45 55 7.3 8 -35 110 P6000
B34556P5008 45 55 10 11 -35 100 P5008
B34557P5008 45 57 9 10 -35 100 P5008
B34560P5008 45 60 11.4 12.5 -35 100 P5008
B35002P5008 50 58 8 9 -35 100 P5008
B35004P5000 50 60 7.3 8 -20 100 P5000
B35004P5008 50 60 7.3 8 -35 100 P5008
B35004P5009 50 60 7.3 8 -45 95 P5009
B35004P5010 50 60 7.3 8 -30 100 P5010
B35004P5600 50 50 7.3 8 -20 80 P5600
B35004P6000 50 60 7.3 8 -35 110 P6000
B35006P5008 50 60 10 11 -35 100 P5008
B35008P5008 50.8 63.5 9.5 10.5 -35 100 P5008
B35008P6000 50.8 63.5 9.5 10.5 -35 110 P6000
B35065P5008 50 65 11.4 12.5 -35 100 P5008
B35070P5008 55 70 10 11 -35 100 P5008
B35077P5008 57.15 69.85 9.53 10.3 -35 100 P5008
B35555P5008 55 63 8 9 -35 100 P5008
B35563P5008 55 65 7.3 8 -35 100 P5008
B35563P6000 55 65 7.3 8 -35 110 P6000
B35565P4300 55 65 10 11 -30 110 P4300
B35565P5008 55 65 10 11 -35 100 P5008
B35570P5008 55 65 12 13 -35 100 P5008
B35666P5000 56 66 6.5 7.3 -20 100 P5000
B35666P5008 56 66 6.5 7.3 -35 100 P5008
B35666P5009 56 66 6.5 7.3 -45 95 P5009
B35666P6000 56 66 6.5 7.3 -35 110 P6000
B35668P5008 56 71 8.6 9.5 -35 100 P5008
B35671P5008 56 71 11.4 12.5 -35 100 P5008
B35671P5010 56 71 11.4 12.5 -30 100 P5010
B36064P5008 63.5 76.2 9.53 10.3 -35 100 P5008
B36068P5000 60 68 8 9 -20 100 P5000
B36068P5008 60 68 8 9 -35 100 P5008
B36070P5008 60 70 10 11 -35 100 P5008
B36074P4300 60 75 10 11 -30 110 P4300
B36074P5008 60 75 10 11 -35 100 P5008
B36074P6000 60 75 10 11 -35 110 P6000
B36075P4300 65 75 12 13 -30 110 P4300
B36075P5008 65 75 12 13 -35 100 P5008
B36076P4301 65 75 7 7.800 -30 110 P4301
B36076P5008 65 75 7 7.800 -35 100 P5008
B36076P5009 65 75 7 7.800 -45 95 P5009
B36371P5008 63 71 8 9 -35 100 P5008
B36372P5008 63 73 6.5 7.3 -35 100 P5008
B36373P5008 63 73 12 13 -35 100 P5008
B36374P5203 63 75 8.7 9.7 -35 100 P5203
B36375P5008 63 75 10 11 -35 100 P5008
B36377P5008 63 78 10 11 -35 100 P5008
B36378P5008 63 78 11.4 12.5 -35 100 P5008
B36502P5008 65 73 8 9 -35 100 P5008
B36504P5008 65 80 12 13 -35 100 P5008
B36980P5008 69.8 82.6 9.75 10.5 -35 100 P5008
B37070P5008 70 78 8 9 -35 100 P5008
B37078P5000 70 80 7 7.800 -20 100 P5000
B37078P5008 70 80 7 7.800 -35 100 P5008
B37078P5009 70 80 7 7.800 -45 95 P5009
B37079P5000 70 80 6.5 7.3 -20 100 P5000
B37079P5008 70 80 6.5 7.3 -35 100 P5008
B37080P4300 70 80 12 13 -30 110 P4300
B37080P5008 70 80 12 13 -35 100 P5008
B37082P5008 70 82 8.7 9.7 -35 100 P5008
B37085P5008 70 85 11.4 12.5 -35 100 P5008
B37085P5010 70 85 11.4 12.5 -30 100 P5010
B37085P6000 70 85 11.4 12.5 -35 110 P6000
B37585P5000 75 85 7 7.800 -20 100 P5000
B37585P5008 75 85 7 7.800 -35 100 P5008
B37585P6000 75 85 7 7.800 -35 110 P6000
B37586P5008 75 85 12 13 -35 100 P5008
B37588P5008 75 88 10 11 -35 100 P5008
B37590P5008 75 90 10 11 -35 100 P5008
B37591P5008 75 90 12 13 -35 100 P5008
B37620P5008 76.2 88.9 9.53 10.3 -35 100 P5008
B37800P5008 78 86 8.5 9.5 -35 100 P5008
B38088P5000 80 90 7 7.800 -20 100 P5000
B38088P5008 80 90 7 7.800 -35 100 P5008
B38089P5008 80 90 10 11 -35 100 P5008
B38090P5008 80 90 12 13 -35 100 P5008
B38093P5008 80 95 10 11 -35 100 P5008
B38093P6000 80 95 10 11 -35 110 P6000
B38094P5008 80 95 11.4 12.5 -35 100 P5008
B38099P4300 80 100 12 13 -30 110 P4300
B38099P5008 80 100 12 13 -35 100 P5008
B38505P5008 85 105 12 13 -35 100 P5008
B38509P5000 85 100 9 10 -20 100 P5000
B38509P5008 85 100 9 10 -35 100 P5008
B38509P5009 85 100 9 10 -45 95 P5009
B38509P6000 85 100 9 10 -35 110 P6000
B38510P5000 85 100 12 13 -20 100 P5000
B38510P5008 85 100 12 13 -35 100 P5008
B38597P5000 85 97 7 7.800 -20 100 P5000
B38889P5008 88.9 101.6 9.53 10.3 -35 100 P5008
B39001P5008 90 100 6.5 7.3 -35 100 P5008
B39001P5009 90 100 6.5 7.3 -45 95 P5009
B39002P5008 90 102 9 10 -35 100 P5008
B39002P5009 90 102 9 10 -45 95 P5009
B39004P5001 90 105 9 10 -35 100 P5001
B39004P5008 90 105 9 10 -35 100 P5008
B39004P6000 90 105 9 10 -35 110 P6000
B39005P5008 90 105 11.4 12.5 -35 100 P5008
B39009P5008 90 110 12 13 -35 100 P5008
B39010P5008 90 110 14.5 16 -35 100 P5008
B39210P5008 92 105 9.5 10.5 -35 100 P5008
B39505P5008 95 110 9 10 -35 100 P5008
B39505P5009 95 110 9 10 -45 95 P5009
B31421P5009 14.0 21.0 5.0 5.6 -45 95 P5009
B31424P6000 14.0 24.0 7.3 8 -35 110 P6000
B33644P5001 36.0 44.0 5.7 6.3 -35 100 P5001
B34554P5000 45.0 55.0 5.8 6.5 -20 100 P5000
B37078P5001 70.0 80.0 7.0 7.8 -35 100 P5001
B39001P5000 90.0 100.0 6.5 7.5 -20 100 P5000
B3B025P5000 110.0 125.0 9.6 10.6 -20 100 P5000
B3M040P4300 220.0 240.0 14.6 16 -30 110 P4300
B3N580P5000 250.0 280.0 22.7 25 -20 100 P5000
B34003P5009 40.0 48.0 7.3 8.0 -45 95 P5009
B35555P5009 55.0 63.0 7.3 8.0 -45 95 P5009
B37070P5009 70.0 78.0 7.3 8.0 -45 95 P5009
B3B052P5008 115 135 11.5 12.5 -35 100 P5008
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