Description
56144 Hydro-Gear Lip Seal 1.375 2.75 0.500 (OEM-Spec)
The Hydro-Gear 56144 Lip Seal is a genuine OEM-spec hydraulic sealing component engineered to deliver dependable fluid retention and protection for internal components within Hydro-Gear hydrostatic transmissions, pump assemblies, and other drivetrain systems. Precisely sized at 1.375 inner diameter 2.75 outer diameter 0.500 width, this robust lip seal is designed to prevent hydraulic fluid leakage around rotating shafts and maintain proper pressure for smooth torque transfer and efficient operation. Manufactured to Hydro-Gears strict standards, the 56144 seal offers long-lasting performance even under demanding turf and drive conditions.
Product Details
Manufacturer Part Number: 56144
Brand: Hydro-Gear (OEM-Spec)
Part Type: Lip Seal (Hydraulic/Rotary)
Dimensions: 1.375 ID 2.75 OD 0.500 Width
Function: Prevents fluid leakage around rotating shafts
Application: Hydro-Gear hydrostatic transmissions, pumps, motors, and drive units
Material: High-performance elastomer (fluid-resistant)
Construction: Precision sealing lip with reinforced support
OEM Status: Genuine Hydro-Gear replacement part
Function
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Creates a fluid-tight seal to prevent hydraulic fluid leakage
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Maintains internal pressure for efficient hydrostatic system operation
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Protects internal components from contamination by dirt, debris, or moisture
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Reduces wear caused by fluid loss and helps extend component life
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Designed for high-load and high-temperature hydraulic environments
Compatible With
The Hydro-Gear 56144 Lip Seal is used in select Hydro-Gear hydraulic and transmission assemblies, including:
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Hydro-Gear integrated transaxles and hydrostatic pump/motor systems
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OEM parts diagrams and rebuild kits that specify a 1.375 2.75 0.500 seal
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Applications where robust shaft sealing is required
Note: Always verify compatibility by matching the seal dimensions to your Hydro-Gear components specification before ordering.
How Its Used
This lip seal is installed internally where a rotating shaft passes through a housing bore:
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Prepare System: Drain hydraulic fluid and clean the work area before service.
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Access Seal Location: Disassemble the transmission, pump, or motor housing per service manual.
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Remove Old Seal: Carefully extract the worn seal without damaging the housing bore.
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Inspect Surfaces: Check shaft and bore surfaces for wear or scoring; repair as needed.
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Install New Seal: Press the Hydro-Gear 56144 seal squarely into the bore using the proper seal driver.
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Reassemble & Refill: Reassemble components, refill with appropriate hydraulic fluid, and test for leaks.
Correct installation ensures effective sealing and reliable operation.
Suggested Maintenance
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Inspect around seal areas periodically for signs of seepage
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Maintain clean, correct-grade hydraulic fluid to reduce premature seal wear
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Replace seals whenever related drive components are disassembled
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Avoid sharp tools that could damage sealing lips during service
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Use only OEM-spec Hydro-Gear seals for proper fit and long service life
The Hydro-Gear 56144 Lip Seal (1.375 2.75 0.500) is a rugged OEM-spec replacement designed to deliver leak-free hydraulic sealing, protect internal drive components, and support long-lasting performance in compatible Hydro-Gear hydrostatic drive systems.









