Axle Shaft
Radial shaft seal
Radial shaft seals are used to seal rotary elements, such as a shaft or rotating bore. Common examples include strut seals, hydraulic pumps seals, axle seals, power steering seals, and valve stem seals. Early radial shaft seals utilized rawhide as the sealing element, and many elastomeric seal companies today once were tanneries. The advent of modern elastomers replaced rawhide, industry also added a garter spring which helps the sealing lip compensate for lip wear and elastomer material changes.
The seal construction will consist of a sprung main sealing lip which has a point contact with the shaft. The point contact is formed by two angles, with the air side angle usually less than the oil side angle. Depending on the seal type these two angles are varied to create a pressure distribution at the seal contact point which has a steeper slope on the oil side of the seal. The shallower the slope on the oil side of the seal the wetter the seal will run. The spring is positioned such that axially the centerline of the spring is biased to the air side of the lip contact point.
In order to exclude contaminants numerous types of dust lips or exclusionary lips may be used. Common elastomers are: FKM, ACM, NBR, HNBR, AEM. In order to resist wear the compounds’ durometer (hardness) is typically 70 to 85 Shore A.
A different seal design for similar applications is a rotating face seal.
Freudenberg-NOK is currently the one of the major leaders in shaft seals, supplying shaft seals to all major OEM suppliers.
Standards
Standards and other documents relating to radial shaft seals
ISO 6194-1:1982 Rotary shaft lip type seals – Nominal dimensions and tolerances
ISO 6194-2:1991 Rotary shaft lip type seals – Vocabulary
ISO 6194-3:1988 Rotary shaft lip type seals – Storage, handling and installation
ISO 6194-4:1988 Rotary shaft lip type seals – Performance test procedures
ISO 6194-5:1990 Rotary shaft lip type seals – Identification of visual imperfections
SAE J946-1989 Application Guide to Radial Lip Seals
RMA OS-4, 1984 Application Guide for Radial Lip Type Shaft Seals
RMA OS-7, 1982 Storage and Handling Guide for Radial Lip Type Shaft Seals
RMA OS-8, 1977 Visual Variations Guide for Rotating Shaft Seals
DIN 3760 Radial-Wellendichtringe (Radial shaft seals)
DIN 3761 Radial-Wellendichtringe fur Kraftfahrzeuge (Motor Vehicles Radial shaft seals), Parts 1-15. This standard covers all aspects including vocabulary, material requirements and test methods.
GOST 8752-79. CIS standard for rotary shaft seals.
External links
Freudenberg-NOK information page on Oil Seals
Garlock Klozure information page on Oil Seals
SKF information page on Radial shaft seals
METAX information page on Radial Lip Shaft seals
RLHudson Shaft Seal Design & Material Guide. Everything you need to know about shaft seals in easy-to-read format
Categories: Seals (mechanical)
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Savage FLUX HP AXLE ENDS (Output Shafts, HPI #104240 $0.99 |
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Nitro Revo 3.3 AXLES (DRIVE SHAFTS SCREWS, 5309 Traxxas $0.99 |
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Nitro Revo 3.3 AXLES (DRIVE SHAFTS SCREWS, 5309 Traxxas $0.99 |
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T-Maxx 3.3 AXLES (DRIVE SHAFTS DRIVESHAFTS, 4907 Traxxas $0.99 |
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1/16 Slash DRIVE SHAFTS (Rally, Mustang, Ken Block, AXLES, hubs), 7009 Traxxas $0.99 |
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Team Durango DNX408 FRONT 94mm DRIVE SHAFTS (AXLES $0.99 |
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TEN-T FRONT/REAR AXLES (CVD DRIVE SHAFTS, LOSB0126 Team Losi 1/10 $0.99 |
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Team Durango DNX408 REAR 96mm DRIVE SHAFTS (AXLES $0.99 |
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NAPA/EMPI CV Boot Kit – Front/Rear Axle Shaft – Left/Right Outer – 2 Kits $0.99 |
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SAVAGE X SS AXLE ENDS (wheel output shafts x 4.6), 861 HPI $0.99 |
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Nitro Revo 3.3 AXLES (DRIVE SHAFTS SCREWS, 5309 Traxxas $0.99 |
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T-Maxx 3.3 AXLES (DRIVE SHAFTS DRIVESHAFTS, 4907 Traxxas $0.99 |
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Savage FLUX HP AXLE ENDS (Output Shafts, HPI #104240 $0.99 |
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1/16 Slash DRIVE SHAFTS (Rally, Mustang, Ken Block, AXLES, hubs), 7009 Traxxas $0.99 |
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AX30758 XR10 Rear Straight Axle Shaft Set $0.99 |
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Nitro Revo 3.3 AXLES (DRIVE SHAFTS SCREWS, 5309 Traxxas $0.99 |
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T-Maxx 3.3 AXLES (DRIVE SHAFTS DRIVESHAFTS, 4907 Traxxas $0.99 |
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TRAXXAS T-MAXX .15 2.5 CENTER DRIVE SHAFTS AXLES DRIVESHAFTS $0.99 |
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TAMIYA REAR AXLE SHAFTS – GRASSHOPPER OR HORNET (X8719) (NEW) $0.99 |
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Nitro Revo 3.3 AXLES (DRIVE SHAFTS SCREWS, 5309 Traxxas $0.99 |
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T-Maxx 3.3 AXLES (DRIVE SHAFTS DRIVESHAFTS, 4907 Traxxas $0.99 |
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08 Suzuki RMZ 250 RM-Z 250F used Front Axle Bolt Shaft $0.99 |
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Dana 60 dust shield chevrolet gm solid front axle shaft chevy $0.99 |
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suzuki gsxr1000 gsxr 1000 Rear swingarm pivot axle shaft 2006 2005 05 06 $0.99 |
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CENTRIC 417.64000 Seal, Rear Axle Shaft $0.99 |
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03 04 05 2005 YAMAHA YZF R6 AND 06 07 08 R6S SWINGARM PIVOT AXLE SHAFT OEM $0.99 |
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DRIVE A SEAL SET AND PLUG A SEAL SET AND TAIL SHAFT AND AXLE PLUGS $1.00 |
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1966-1975 Dodge & Plymouth Axle Shaft Flange Gasket $1.00 |
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1966-1975 Dodge & Plymouth Axle Shaft Flange Gasket $1.00 |
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CENTRIC 417.68000 Seal, Rear Axle Shaft $1.00 |
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Centric Axle Shaft Seal 417.68000 $1.02 |
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Centric Axle Shaft Seal 417.91001 $1.03 |
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Centric Axle Shaft Seal 417.47001 $1.03 |
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Centric Axle Shaft Seal 417.46010 $1.04 |
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Centric Rear Inner Axle Shaft Seal 417.63000 $1.07 |
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Centric Axle Shaft Seal 417.44009 $1.07 |
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Centric Axle Shaft Seal 417.61004 $1.07 |
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Centric Axle Shaft Seal 417.90002 $1.12 |
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Centric Axle Shaft Seal 417.64001 $1.22 |
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Centric Rear Axle Shaft Seal 417.61001 $1.22 |
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CENTRIC 417.64001 Seal, Rear Axle Shaft $1.23 |
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HPI SAVAGE XL 5.9 WIDE DRIVE AXLES SHAFTS CUPS X SS $1.25 |
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Centric Axle Shaft Seal 417.42009 $1.25 |
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Centric Rear Inner Axle Shaft Seal 417.47008 $1.25 |
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Centric Axle Shaft Seal 417.91011 $1.25 |
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Centric Front Inner Axle Shaft Seal 417.66000 $1.30 |
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Centric Axle Shaft Seal 417.91006 $1.35 |
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Centric Axle Shaft Seal 417.68001 $1.39 |
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NATIONAL 722108 Seal, Front Axle Shaft $1.41 |
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Centric Rear Axle Shaft Seal 417.65011 $1.43 |
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Centric Axle Shaft Seal 417.64003 $1.43 |
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CENTRIC 417.65011 Seal, Rear Axle Shaft $1.45 |
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Motorcraft Rear Axle Output Shaft Seal BRS-109 $1.47 |
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O Ring Rear Shaft Axle Ford F350 #E5TZ4A331A $1.47 |
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Centric Rear Axle Shaft Seal 417.62020 $1.48 |
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Centric Axle Shaft Seal 417.91004 $1.48 |
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Centric Axle Shaft Seal 417.90004 $1.48 |
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Centric Rear Inner Axle Shaft Seal 417.42005 $1.48 |
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Centric Axle Shaft Seal 417.44003 $1.48 |
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Centric Rear Inner Axle Shaft Seal 417.33000 $1.48 |
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Centric Axle Shaft Seal 417.45000 $1.48 |
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Centric Rear Axle Shaft Seal 417.62001 $1.48 |
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Centric Rear Outer Axle Shaft Seal 417.42032 $1.48 |
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Great Planes 1-1/4″ x 1/8″ Bolt-On Axle Shafts $1.50 |
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CENTRIC 417.62001 Seal, Rear Axle Shaft $1.50 |
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NATIONAL 722109 Seal, Front Axle Shaft $1.51 |
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MOTORCRAFT BRS-109 Seal, Rear Axle Shaft $1.52 |
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NATIONAL 710044 Seal, Front Axle Shaft $1.54 |
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NATIONAL 710044 Seal, Front Axle Shaft $1.60 |
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Centric Axle Shaft Seal 417.91000 $1.61 |
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Centric Rear Inner Axle Shaft Seal 417.91008 $1.66 |
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Centric Axle Shaft Seal 417.44005 $1.66 |
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Ford Shaft O Ring Rear Axle 1994-97 F350 E5TZ4A331A $1.67 |
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Ford Shaft O Ring Rear Axle 1994-97 F350 E5TZ4A331A $1.67 |
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Centric Rear Axle Shaft Seal 417.61008 $1.74 |
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Centric Rear Inner Axle Shaft Seal 417.42031 $1.74 |
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Centric Axle Shaft Seal 417.44002 $1.74 |
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Centric Rear Axle Shaft Seal 417.61007 $1.74 |
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Lisle 58430 Shaft Type Seal Puller $12.19 Removes cam shaft and crank shaft seals without damage to the shaft.Removes the seal without damage to the shaft… |
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