Radial shaft seals are critical components in automotive and industrial systems, primarily used to prevent lubricants from leaking out of an enclosure or to prevent dirt and contaminants from entering. They are commonly found in hydraulic cylinders, engines, pumps, and gearboxes, ensuring smooth operation and extending equipment lifespan. Products were evaluated based on material composition, dimensional accuracy, seal profile, stated operating conditions, and overall suitability for diverse applications, combined with feature analysis.
YOKIVE 10 Pcs UHS Radial Shaft Seals, Industry PU Oil Seals for Hydraulic Cylinders (Blue, 12-mm ID x 20-mm OD 5-mm Width)
$6.89
This 10-piece pack offers versatile PU material with excellent resistance properties, suitable for a broad range of industrial and workshop applications.
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MECCANIXITY USH Radial Shaft Seal 14mm ID x 22mm OD x 5mm Width Nitrile Rubber Oil Seal, Black
$5.79
Providing a standard Nitrile Rubber seal with specific working parameters, this option offers a cost-effective solution for less demanding applications.
View on AmazonFeaturing a UN profile and robust PU material in a larger size, this seal is typically chosen for more rigorous hydraulic cylinder applications requiring enhanced durability.
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- Cross Section Type: UN Shape; Hardness: A90; Width: 6 mm / 0.24 inch; Inner Diameter: 25 mm / 0.98 inch; Outer Diameter: 35 mm / 1.38 inch; Working Temperature Range: -20°C to 100°C (-4 °F to 212°F); Working Pressure Range: Less Than 35 MAP; Package...
- Advantage: Crafted from PU, with wear resistance and impact resistance, offers durability and longevity, is waterproof, has good sealing, and is not easy to compress and deform.
- Advantage: The UN oil seal's inner and outer sealing lip are the same height, with a UN-shaped cross-section. It is excellently resistant to various petroleum oils, greases, hydraulic fluids, mineral oil, and grease.
- Application: An oil seal is a crucial sealing component for mechanical equipment. It is designed to prevent lubricating oil or grease leakage and keep dust and water from entering the machine. Oil seals are applied to various models of industrial...
- NOTE: Please confirm the required size and material before purchase, and put it in the right place.
- √ MULTIPURPOSE - Our oil seals are great for industry, and workshops, suitable for industrial hydraulic cylinders, cylinders, hoists, guide moving rods, piston pull rods, and one way piston seals in static pressure.
- √ WHAT YOU GET - The package comes with 5pcs lip oil seals that measure inner diameter: 10-mm, outer diameter: 16-mm, max. outer diameter: 17-mm, width: 6-mm, hardness: 90A, working speed: less than 0.5m/s, working pressure: less than 35Mpa, work...
- √ RELIABLE MATERIAL - This UN radial shaft seal is made of PU, which is oil-resistant, wear-resistant, low-temperature-resistant, aging-resistant, good hardness, elastic, and easy to install.
- √ SPECIAL DESIGNED - The UHS oil seal inner and outer sealing lips are of equal height and have a Y-shaped cross-section.
- √ KINDLY NOTE - Please read the measurements before ordering if you are concerned about the size.
- Size - 12mm x 22mm x 7mm TC Shaft Oil Seal
- Construction - Fluorine rubber oil seal body, reinforcing frame and self-tightening coil spring, has durometer of 70A
- Functions - It can prevent dust and impurities into inside of the machine, and prevent lubricating oil from leaking
- Applications - Oil seals are used to protect shafts and bearings from ingress of dirt and foreign matter and egress of oil or grease
- Working Temperature Range - From -13 Degrees F (-25 Degrees C) to 392 Degrees F (200 Degrees C)
- Inner Diameter: 30mm/1.18", Outer Diameter: 55mm/2.17", Width: 10mm/0.39"
- Working Temperature Range: From -22 degrees F to 212 degrees F
- Widely used in automobiles, motorcycle crankshafts, camshafts, differentials, shock absorbers, engines, axles, front and rear wheels and other parts.
- It can prevent dust and impurities into inside of the machine, and prevent lubricating oil from leaking.
- The rubber cover outside diameter creates an optimum seal at the hub
- country of origin:United States
- package height :9.0"
- package length :5.0"
- package width :6.0"
- Fitment: For John Deere tractor 1025R and 2025R. Replace for TR109398,and MIU801706
- Material: The seal is made of oil-resistant NBR (Nitrile) rubber, ensuring long-lasting performance, even under heavy use and harsh conditions
- Feature: Stop front axle fluid leaks in your tractor with this durable seal and gasket repair kit
- Package Included: 1 radial shaft seal, 1 gasket
- Customer Service: If you need any assistance, please contact us at any time
- √ MULTIPURPOSE - Our oil seals are great for industry, and workshops, suitable for industrial hydraulic cylinders, cylinders, hoists, guide moving rods, piston pull rods, and one way piston seals in static pressure.
- √ WHAT YOU GET - The package comes with 2pcs lip oil seals that measure inner diameter: 31.5-mm, outer diameter: 41.5-mm, max. outer diameter: 43.5-mm, width: 6-mm, hardness: 90A, working speed: less than 0.5m/s, working pressure: less than 35Mpa, work...
- √ RELIABLE MATERIAL - This UHS radial shaft seal is made of PU, which is oil-resistant, wear-resistant, low-temperature-resistant, aging-resistant, good hardness, elastic, and easy to install.
- √ SPECIAL DESIGNED - The UHS oil seal inner and outer sealing lips are of equal height and have a Y-shaped cross-section.
- √ KINDLY NOTE - Please read the measurements before ordering if you are concerned about the size.
- The 20mm x 40mm x 7mm mechanical seal, with a hardness 70A and a TG4 shaped cross-section, provides reliable sealing performance
- Features: The EU oil seal, crafted from nitrile rubber, offers durability and longevity in challenging industrial settings with excellent resistance to various petroleum oils, greases, hydraulic fluids, mineral oil, and grease.
- Advantage: The EU oil seal serves as a vital sealing component in industrial machinery such as pumps, motors, compressors, and gearboxes, as well as in automotive systems like engines and hydraulic systems. Furthermore, it plays a crucial role in...
- Application: An oil seal is a crucial sealing component for mechanical equipment, designed to prevent the leakage of lubricating oil or grease and to keep out dust and water from entering the machine.The USH oil seal's inner and outer sealing lip are the...
- NOTE: Please confirm the required size and material before purchase, and put it in the right place.
- √ MULTIPURPOSE - Our oil seals are great for industry, and workshops, suitable for industrial hydraulic cylinders, cylinders, hoists, guide moving rods, piston pull rods, and one way piston seals in static pressure.
- √ WHAT YOU GET - The package comes with 5pcs lip oil seals that measure inner diameter: 30-mm, outer diameter: 40-mm, max. outer diameter: 42-mm, width: 6-mm, hardness: 90A, working speed: less than 0.5m/s, working pressure: less than 35Mpa, work...
- √ RELIABLE MATERIAL - This UHS radial shaft seal is made of PU, which is oil-resistant, wear-resistant, low-temperature-resistant, aging-resistant, good hardness, elastic, and easy to install.
- √ SPECIAL DESIGNED - The UHS oil seal inner and outer sealing lips are of equal height and have a Y-shaped cross-section.
- √ KINDLY NOTE - Please read the measurements before ordering if you are concerned about the size.
- The 30mm x 52mm x 10mm mechanical seal, with a hardness 70A and a TG4 shaped cross-section, provides reliable sealing performance
- Features: The EU oil seal, crafted from nitrile rubber, offers durability and longevity in challenging industrial settings with excellent resistance to various petroleum oils, greases, hydraulic fluids, mineral oil, and grease.
- Advantage: The EU oil seal serves as a vital sealing component in industrial machinery such as pumps, motors, compressors, and gearboxes, as well as in automotive systems like engines and hydraulic systems. Furthermore, it plays a crucial role in...
- Application: An oil seal is a crucial sealing component for mechanical equipment, designed to prevent the leakage of lubricating oil or grease and to keep out dust and water from entering the machine.The USH oil seal's inner and outer sealing lip are the...
- NOTE: Please confirm the required size and material before purchase, and put it in the right place.
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Last update on 2026-07-18 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Radial Shaft Seals
Material Composition and Resilience
The choice of material significantly impacts a radial shaft seal's performance and longevity. Typically, seals are crafted from either Polyurethane (PU) or Nitrile Rubber. PU, as seen in YOKIVE products, is known for its superior oil resistance, wear resistance, and ability to perform across a wider temperature spectrum, including lower temperatures. This makes PU seals a preferred choice for heavy-duty industrial hydraulic cylinders where resilience is paramount. Conversely, Nitrile Rubber, utilized by MECCANIXITY and PATIKIL, offers good oil resistance and elasticity, making it a reliable option for general-purpose sealing tasks within specified temperature and pressure ranges, though it typically has lower wear resistance compared to PU.
Seal Profile and Application Specificity
Radial shaft seals come in various profiles, each optimized for specific sealing dynamics. For instance, YOKIVE offers UHS and UN type seals, commonly designed for piston and rod sealing in hydraulic cylinders. The USH profile, as featured in MECCANIXITY seals, is a Y-shape mechanical seal specifically for piston and piston rods, indicating its suitability for dynamic applications. PATIKIL's EU seal, with a TG4 shaped cross-section, is described as providing reliable sealing for bearing shafts, oil pumps, and engines. Understanding these profile designations (UHS, UN, USH, EU, TG4) is crucial, as an incorrect profile can lead to premature failure or ineffective sealing, even if dimensions are correct.
Dimensional Precision and Fit
Accurate sizing is non-negotiable for radial shaft seals. The Inner Diameter (ID), Outer Diameter (OD), and Width must precisely match the shaft and housing dimensions to ensure a proper seal. Products like the YOKIVE 12-mm ID x 20-mm OD x 5-mm Width seal or the PATIKIL 22-mm x 35-mm x 7-mm seal highlight the importance of these measurements. A seal that is too loose will leak, while one that is too tight can cause excessive friction, heat, and accelerated wear. Users typically confirm these dimensions against existing seals or manufacturer specifications to guarantee compatibility and optimal function.
Operating Conditions: Pressure and Temperature
The environment in which the seal operates dictates the required material and design. MECCANIXITY provides specific working pressure (<25Mpa) and temperature ranges (-15°C to 100°C for Nitrile Rubber), which are critical considerations. PU seals, such as those from YOKIVE, often boast broader temperature and pressure tolerances, making them more suitable for demanding conditions. Exceeding these specified limits can lead to material degradation, hardening, softening, or cracking, compromising the seal's integrity and potentially leading to system failure. Always verify the seal's stated operating parameters against the application's actual environmental conditions.
Pros & Cons
YOKIVE 10 Pcs UHS Radial Shaft Seals, Industry PU Oil Seals for Hydraulic Cylinders (Blue, 12-mm ID x 20-mm OD 5-mm Width)
Pros
- Constructed from durable PU material, offering superior oil and wear resistance.
- Designed for multipurpose use, suitable for a wide array of industrial hydraulic cylinders and workshops.
- Comes in a convenient 10-piece pack, providing good value and spares for common sizes.
Cons
- Specific low-temperature resistance is mentioned but without a precise range, making direct comparison challenging.
- The 12-mm ID x 20-mm OD x 5-mm Width size is specific and may not fit all common applications.
MECCANIXITY USH Radial Shaft Seal 14mm ID x 22mm OD x 5mm Width Nitrile Rubber Oil Seal, Black
Pros
- Made from Nitrile Rubber, known for good oil resistance and elasticity.
- Features a Y-shape (USH) mechanical seal, specifically designed for piston and piston rod applications.
- Clearly states working pressure (Less than 25Mpa) and temperature range (-15°C to 100°C) for informed selection.
Cons
- Nitrile Rubber typically has lower wear resistance and temperature limits compared to PU.
- The listing implies a single seal, which may not be cost-effective for larger projects.
B0DGF9TDVK
Pros
- Features a TG4 shaped cross-section and 70A hardness, providing robust and reliable sealing performance.
- Crafted from durable Nitrile Rubber, offering longevity in challenging industrial environments.
- Serves as a vital sealing component in various industrial machinery, including pumps, motors, and compressors.
Cons
- Nitrile Rubber's temperature and chemical resistance may be less comprehensive than PU for extreme conditions.
- Comes in a 2-piece pack, which might be insufficient for larger maintenance or repair operations compared to 10-piece sets.
Common Mistakes to Avoid
Overlooking Material Compatibility with Operating Conditions
A frequent error involves selecting a radial shaft seal based solely on dimensions, neglecting the material's suitability for the application's specific environment. For instance, opting for a Nitrile Rubber seal, like those from MECCANIXITY or PATIKIL, in an application that experiences temperatures or chemical exposures beyond its rated capacity can lead to premature failure. PU seals from YOKIVE, with their enhanced wear and low-temperature resistance, are often necessary for more demanding or aggressive fluid environments.
Ignoring the Specific Seal Profile for Dynamic vs. Static Applications
Users sometimes assume all radial shaft seals are interchangeable, failing to consider the critical differences in seal profiles. An USH radial shaft seal from MECCANIXITY, designed as a Y-shape for piston and piston rods, is optimized for dynamic sealing. Conversely, a TG4 shaped EU radial shaft seal from PATIKIL might be better suited for bearing shafts. Using a general-purpose seal where a specific profile (like UHS or UN from YOKIVE) is required for hydraulic cylinders can result in inadequate sealing performance and increased leakage.
Inaccurate Dimensional Matching Leads to Failure
One of the most common and critical mistakes is incorrect measurement of the Inner Diameter (ID), Outer Diameter (OD), and Width. Attempting to install a 12-mm ID x 20-mm OD x 5-mm Width seal (like YOKIVE B0DGPX9884) into a housing designed for a 22-mm x 35-mm x 7-mm seal (PATIKIL B0DGF9TDVK) will inevitably lead to either immediate leakage or excessive friction and rapid wear. Precision in these measurements is paramount to ensure a tight, effective seal without compromising component movement.