Hyundai R160-7 31Y1-20340 Hydraulic Bucket Cylinder Seal Kit

Model:Hyundai R160LC-7 Hydraulic cylinder seal kit

Part Name:31Y1-20340

CylinderNo:31N5-60110

Rod:80MM

Piston:115MM

For:Hyundai R170W-7A,R180LC-7

Material :PU+NBR+PTFE

Certification: IOS 9001

Packaging Details: bag or box +carton

Delivery Time:2-5days upon payments confirmed

Brand:TOPARTS, OEM or as Required

Payment Terms:TT/Paypal/WEST UNION

Supply Ability:500

MOQ:1set
Parts list

Exploded view

Product Description

Heavy-Duty 31Y1-20340 Bucket Cylinder Seal Kit for Hyundai R160-7 Excavator (Fits 31N5-60110)

Restore relentless digging force and eliminate hydraulic drifting in your earthmoving operations with Toparts’ premium 31Y1-20340 bucket cylinder service repair kit. Specifically precision-engineered for the 31N5-60110 bucket oil cylinder utilized on Hyundai Robex R160-7 crawler excavators, this overhaul kit is built to survive the high-frequency cycles and extreme mechanical stress common in tough trenching and material handling environments.

The Toparts Engineering Difference: Built to Survive Heavy Scraper Stress

The bucket cylinder is the most exposed hydraulic actuator on an excavator. It operates in constant proximity to loose soil, abrasive sand, and jagged rocks, while undergoing severe pressure spikes whenever the bucket strikes a hard surface. Standard aftermarket seals quickly suffer from lip erosion or extrusion under these conditions, causing fluid bypass and loss of breakout force. At Toparts, we manufacture our Hyundai-compatible kits with explicit material upgrades:

Premium P6000 Polyurethane Matrix: Our primary rod and piston seals are molded from proprietary, heavy-duty P6000 PU. This material offers 40% higher tensile strength and superior extrusion resistance under high pressure compared to standard TPU, keeping the seal lip sharp and active.

Aggressive Micro-Particle Dust Wiper: Features an engineered double-lip scraper system that vigorously wipes away fine quartz dust, mud, and water films from the extending rod, protecting the internal sealing elements and cylinder wall from score marks.

Zero-Drift Heavy Duty Buffer Ring: The integrated step seals and buffer rings utilize precision-filled PTFE compounds backed by premium NBR energizers. This design absorbs sudden pressure spikes during heavy-impact digging, preventing localized thermal buildup and maintaining strict holding power.

High Elastic Memory O-Rings: Formulated to resist compression set and continuous high oil temperatures up to 120°C, ensuring tight static sealing across the cylinder head and block connection.

Technical Specifications:

Brand Compatibility: Hyundai (Robex Series)

Excavator Model Match: R160-7 / R160LC-7 (16-Ton Class)

Sealing Kit Part Number (P/N): 31Y1-20340 / 31Y120340

Target Cylinder Assembly Number: 31N5-60110 / 31N560110

Application Component: Bucket Hydraulic Attachment Cylinder

Material Compound Matrix: High-Performance P6000 PU, Reinforced PTFE + Bronze, Premium NBR

Condition: 100% Brand New Premium Industrial Aftermarket.