Seal Kits for Hyundai Excavators - DJF Seals
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31Y1-12630: Boom Adjust Hydraulic Cylinder Seal Kit for Hyundai Excavator R210LC-3
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31Y1-24090: Adjust Hydraulic Cylinder Seal Kit for Hyundai Excavator R160LC-7, R160LC-7A
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31Y1-20430 Adjustable Boom Cylinder Seal Kit for Hyundai R160LC-7 & R160LC-7A Excavators
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91E6-2712: Arm Hydraulic Cylinder Seal Kit for Hyundai Excavator R130LC, R130W
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91E6-2711: Boom Hydraulic Cylinder Seal Kit for Hyundai Excavator R130LC, R130W
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91E6-2713 Bucket Cylinder Seal Kit for Hyundai R130LC / R1300LC Excavators
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31Y1-21200: Adjust Boom Hydraulic Cylinder Seal Kit for Hyundai Excavator R140LC-7A
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31Y1-16170 Adjust Cylinder Seal Kit — Product Overview
The 31Y1-16170 Adjust Cylinder Seal Kit is a precision aftermarket replacement for Hyundai R140 and R210 series excavator adjust cylinders. Engineered for 75mm rod and 105mm bore hydraulic cylinders, this kit provides complete reseal coverage for the boom safety valve and adjust circuit on mid-size Hyundai excavators.
Adjust cylinders on Hyundai R140/R210 excavators regulate the boom safety valve — a critical component that controls hydraulic flow to prevent boom collapse during lifting operations. When adjust cylinder seals degrade, valve response becomes sluggish or erratic, causing boom drift and reduced precision in fine grading and material handling tasks. Hydraulic oil bypass across worn seals also leads to external leakage and system contamination.
The 31Y1-16170 kit features high-performance polyurethane rod seals for consistent valve actuation and NBR static seals etc for reliable fluid containment. DJF Seals supplies this kit at factory-direct wholesale pricing — one kit supporting Hyundai R140 and R210 adjust cylinder applications.
Technical Specifications
Parameter Specification OEM Part Number 31Y1-16170 Compatible Brand Hyundai Cylinder Application Adjust Cylinder (Boom Safety Valve) Rod Diameter 75 mm Bore Diameter 105 mm Material Polyurethane, NBR, PTFE etc Kit Contents Rod seal, Piston seal, Wiper, O-rings, Backup rings Condition New, Aftermarket Replacement Business Type Factory Direct Wholesale Compatible Models
- Hyundai R140LC-7A — Adjust Cylinder (Boom Safety Valve)
- Hyundai R210LC-7 — Adjust Cylinder (Boom Safety Valve)
- Hyundai R210LC-9 — Adjust Cylinder (Boom Safety Valve)
Key Features & Benefits
- Adjust Cylinder Precision — Rod and piston seals engineered specifically for the low-displacement, high-frequency actuation characteristics of boom safety valve adjust circuits on Hyundai R140/R210 excavators.
- Dual-Model Coverage — One kit fits both R140 and R210 platform adjust cylinders, streamlining parts inventory for Hyundai excavator fleets and independent repair shops.
- Consistent Valve Response — Polyurethane rod seal maintains consistent hydraulic pressure delivery to the boom safety valve, ensuring precise boom control during fine grading and material placement.
- Complete Reseal Kit — Includes rod seal, piston seal, wiper, O-rings, and backup rings — all seals required for a full adjust cylinder overhaul in one package.
- Factory-Direct Wholesale — Competitive pricing with flexible minimum order quantities. OEM/ODM service and custom packaging available for Hyundai parts distributors.
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31Y1-18110 Arm Cylinder Seal Kit for Hyundai R140LC-7 / R140W-7 Excavators
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31Y1-04032: Blade Hydraulic Cylinder Seal Kit for Hyundai Excavator R140LC-7, R140LC-7A