Name: Y-Type Hydraulic Oil Seal
Brand: Axis (xi'an)Technology Co.,Ltd.

Y-Type Hydraulic Oil Seal

Our premium Y-Type hydraulic seals feature a double-lip design that ensures both effective sealing and dust protection. These oil seals are available in three material options: NBR (-30°C to 120°C) for standard applications, wear-resistant PU for high-pressure environments, and high-temperature FKM (up to 200°C) for extreme conditions. Engineered to be pressure-energized, these seals provide reliable performance under pressures ranging from 0.1-40MPa, and are compatible with hydraulic oil, HFA/HFB, and fuels. The Y-type hydraulic oil seal is designed for easy installation and guarantees zero-leak performance, making it an ideal choice for demanding industrial applications.

Specifications of Y-Type Hydraulic Oil Seal

Product Name		Y-Type Hydraulic Seal
Material		Nitrile(NBR)/Polyurethane(PU)/FKM– Premium oil seal material
Hardness (Shore A)		70~90 Shore A (NBR/PU)
Working Temperature		-30°C ~ +120°C (NBR) / +200°C (FKM)
Working Pressure		0.1~40 Mpa
Medium		Hydraulic oil/HFA/HFB/Fuels

Key Features of Y-Type Hydraulic Oil Seal

Double-lip design		Main lip for sealing + secondary lip for dust protection
Pressure-Energized		Sealing force increases with pressure– Superior hydraulic shaft seal
Material Options		NBR (cost-effective), PU (wear-resistant), FKM (high-temp)
Easy Installation		No special tools required

Advantages Comparison of Y-Type Hydraulic Oil Seal

Feature	Y-Seal	O-Ring
Sealing Principle	Pressure-energized	Static compression
Extrusion Resistance	Excellent	Moderate
Service Life	Long (2-3x longer)	Shorter

Application Scenario of Y-Type Hydraulic Oil Seal

Application Scenario	Typical Equipment	Recommended Model
Construction Machinery	Hydraulic cylinders, excavator arms	YS-NBR (Standard)
Injection Molding	Injection molding cylinders	YS-PU (Wear-resistant)
Agricultural Equipment	Tractor hydraulic systems	YS-FKM (Weather-proof)
Industrial Hydraulics	Presses, valves	YS-HP (High-pressure)

Operating Condition Compatibility of Y-Type Hydraulic Oil Seal

Scenario Feature	Compatible Model	Advantage
High-pressure & high-frequency	YS-PU	Extrusion-resistant
Corrosive media	YS-FKM	Chemical-resistant
Extreme temperatures	YS-HNBR	-40°C~150°C Wide temperature range

How to Select a Y-type Hydraulic Oil Seal

When selecting a Y-type hydraulic oil seal from our premium rubber seal products, consider the following aspects to ensure optimal performance and longevity in your hydraulic systems:

Dimensional Parameters

Inner Diameter: Measure the diameter of the shaft accurately. The inner diameter of the Y - type oil seal should match the shaft diameter precisely. Usually, it is chosen to be equal to or slightly smaller than the shaft diameter to ensure a tight fit between the oil seal lip and the shaft, thus achieving a reliable seal.
Outer Diameter: Determine it according to the size of the installation hole. Generally, the diameter of the installation hole is slightly larger than the outer diameter of the oil seal to facilitate smooth installation and ensure that the oil seal remains stable in the hole.
Section Dimensions: The height and width of the Y - type oil seal's cross - section should be selected according to the specific installation space and sealing requirements. Different section dimensions affect the sealing performance and load - bearing capacity of the oil seal.

Material Properties

Nitrile Rubber (NBR): It has good oil resistance, wear resistance, and aging resistance. It can maintain good elasticity and sealing performance within a certain temperature range, typically - 40°C to 120°C. It is suitable for general - purpose hydraulic systems.
Fluororubber (FKM): It has excellent high - temperature resistance, chemical corrosion resistance, and oil resistance, and can withstand temperatures from - 20°C to 200°C. It is suitable for hydraulic systems in harsh environments, such as those exposed to high - temperature oils or chemical media.
Polyurethane (PU): It has high wear resistance, tear resistance, and good elasticity. It can work well in a medium - temperature range and has better sealing performance under high - pressure conditions. It is often used in high - pressure hydraulic systems.

Working Conditions

Temperature: Select an oil seal material based on the operating temperature of the hydraulic system. For high - temperature environments, choose materials like fluororubber or polyurethane with good high - temperature resistance. For low - temperature environments, consider materials with good low - temperature flexibility to prevent the oil seal from becoming brittle and losing its sealing function.
Pressure: The working pressure of the hydraulic system is a crucial factor. Y - type oil seals are available in different pressure - resistant grades. Select an oil seal with a suitable pressure - resistant rating to ensure that it can withstand the system pressure without leakage. For high - pressure systems, choose oil seals with reinforced structures or special materials.
Speed: The movement speed of the piston or shaft in the hydraulic system affects the selection of the oil seal. At high speeds, the oil seal is subject to greater friction and heat, so a material with good heat dissipation and wear - resistance properties should be chosen to ensure the service life and sealing performance of the oil seal.

Sealing Medium

The properties of the hydraulic oil or other media in the system also influence the choice of oil seal. Different oil seal materials have different resistances to various media. For example, nitrile rubber is suitable for common mineral - based hydraulic oils, while fluororubber has better resistance to synthetic hydraulic oils and some chemical - resistant media. Ensure that the selected oil seal material is compatible with the sealing medium to avoid material degradation and loss of sealing performance.

Installation and Compatibility

Installation Space: Consider the available space for installing the oil seal to ensure that the selected Y - type oil seal can be properly installed without interference. Pay attention to the installation method and requirements to avoid damaging the oil seal during installation.
Compatibility with Components: The Y - type oil seal should be compatible with other components in the hydraulic system, such as the piston, cylinder, and shaft. Ensure that the dimensions and tolerances of the oil seal match those of the adjacent components to ensure a proper fit and reliable sealing.