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PU Backup Ring

380621A1 Case Backup Ring

JIC-380621A1 

Material: Polyurethane

Hardness: 65 ShoreD

Work Temperature:-40°C~+110°C

Min. Order Quantity: 100pcs
Supply Ability: 1000000 Sets per Day
Delivery Time: 5-7 days for small order

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Case 1346359C1 SPG Piston Seal

JIC-1346359C1 Inch Piston Seal

Supply Ability: 1000 Sets per Week
Delivery Time: 5-7 days for a small order

Material: PTFE+Bronze+NBR

Temperature: -50 °C~+200°C

Max. Speed：1 m/s

Application:921B, 921C, 921

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Case 1542928C1 Rod Buffer Seal

JIC-1542928C1 Buffer Ring Seal

Supply Ability: 1000 PCS per day
Delivery Time: 5-7 days for a small order

Material: PU+Nylon

Temperature: -30 °C~+120°C

Max. Speed：1 m/s

Application: 590SL, 721C, 580SL, 570LXT, 580L, 590, 580SK, 721B, 621C, 590L

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Case 1542929C1 Inch Size Rod Seal

JIC-1542929C1 PU Rod Seal, ID 88.9mm

Supply Ability: 1000 PCS per day
Delivery Time: 5-7 days for a small order

Material: PU

Temperature: -30 °C~+120°C

Max. Speed：1 m/s

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Case 1542930C1 Buffer Seal Ring

JIC-1542930C1 Buffer Ring Seal

Supply Ability: 1000 PCS per day
Delivery Time: 5-7 days for a small order

Material: PU+Nylon

Temperature: -30 °C~+120°C

Max. Speed：1 m/s

Application: 580SK, 580SL, 1150G, 590, 590SL, 590L

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Case 1542931C1 Rod Seal ID 2.5″

JIC-1542931C1 Inch Rod Seal, ID 2.5″

Supply Ability: 1000 PCS per day
Delivery Time: 5-7 days for a small order

Material: PU

Temperature: -30 °C~+120°C

Max. Speed：1 m/s

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Case 1542998C1 Buffer Ring

JIC-1542998C1 Buffer Ring Seal

Supply Ability: 1000 PCS per day
Delivery Time: 5-7 days for a small order

Material:PU+Nylon

Temperature: -30 °C~+120°C

Max. Speed：1 m/s

Application: 621B, 570LXT, 721B, 821B, 621C, 721C, 821C, 1150E, 580SL, 590, 1150G, 590SL, 480F, 480F LL, 650G, 1155E, 850G, 580L, 580SK, 590L

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Case 1542999C1 U Cup Rod Seal ID1.75″

JIC-1542999C1 U-Cup Rod Seal, ID1.75″

Supply Ability: 1000 PCS per day
Delivery Time: 5-7 days for a small order

Material: PU

Temperature: -30 °C~+120°C

Max. Speed：1 m/s

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Case 1543007C1 Buffer Ring

JIC-1543007C1 Buffer Ring Seal

Supply Ability: 1000 PCS per day
Delivery Time: 5-7 days for a small order

Material: PU+Nylon

Temperature: -30 °C~+120°C

Max. Speed：1 m/s

Application: 590SL, 590, 590L

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Case 1543008C1 Inch U-Cup Rod Seal

JIC-1543008C1 Inch U-Cup Rod Seal

Supply Ability: 1000 PCS per day
Delivery Time: 5-7 days for a small order

Material: PU

Temperature: -30 °C~+120°C

Max. Speed：1 m/s

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Case 1543009C1 Inch Size Buffer Ring

JIC-1543009C1 Inch Size Buffer Ring, ID 76.2mm

Supply Ability: 1000 PCS per day
Delivery Time: 5-7 days for a small order

Material: PU and Nylon

Temperature: -30 °C~+120°C

Max. Speed：1 m/s

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Case 1543010C1 U-Cup Rod Seal Inch

JIC-1543010C1 U-Cup Rod Seal Inch

Supply Ability: 1000 PCS per day
Delivery Time: 5-7 days for a small order

Material: PU

Temperature: -30 °C~+120°C

Max. Speed：1 m/s

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Case 1543011C1 Inch Size Buffer Seal

JIC-1543011C1 Inch Size Buffer Seal, ID 88.9mm

Supply Ability: 1000 PCS per day
Delivery Time: 5-7 days for a small order

Material: PU and Nylon

Temperature: -30 °C~+120°C

Max. Speed：1 m/s

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Case 1543012C1 U-Cup Rod Seal Inch

JIC-1543012C1, U-Cup Rod Seal Inch

Supply Ability: 1000 PCS per day
Delivery Time: 5-7 days for a small order

Material: PU

Temperature: -30 °C~+120°C

Max. Speed：1 m/s

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PU Backup Ring

CASE 446178A1 Urethane O Ring Backup Ring

JIC-446178A1

Material: Polyurethane

Hardness: 65 ShoreD

Work Temperature:-40°C~+110°C

Min. Order Quantity: 100pcs
Supply Ability: 1000000 Sets per Day
Delivery Time: 5-7 days for small order

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CASE 87715786 Inch Piston Seal

CASE Inch Piston Seal, a bronze-filled PTFE face ring pre-loaded by NBR o-ring.

Min. Order Quantity: 50 pcs
Supply Ability: 1000 Sets per Week
Delivery Time: 5-7 days for a small order

Material: PTFE+Bronze+NBR

Temperature: -50 °C~+200°C

Max. Speed：1 m/s

Application: 580N, 580N EP

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Replacement OEM Hydraulic Seals

 Product Description

Our replacement OEM hydraulic seal kits are engineered to match the specifications of original equipment manufacturers (OEM) for heavy machinery such as excavators, loaders, and hydraulic breakers. These kits are ideal for brands like Komatsu, Caterpillar, Volvo, Hitachi, Hyundai, Doosan, and more.
Each kit includes piston seals, rod seals, dust seals, O-rings, wear rings, and backup rings — made from high-grade materials such as NOK/NBR, PU, PTFE, and fabric-reinforced rubber, ensuring excellent sealing performance and long service life.

 Key Advantages

•OEM-level compatibility
Perfectly matches OEM size and function.
•Durable & high-performance materials
Resistant to wear, heat, pressure, and chemicals.
•Wide range of applications
Covers boom, arm, bucket, swing, and travel cylinders.
•Cost-effective solution
Reliable quality at a more competitive price than OEM.
•Ready stock & fast shipping
Popular models available for immediate delivery.

Usage Notes

•Please verify machine model and OEM part number before ordering.
•Installation by professional technicians is recommended to avoid leaks or damage.
•Store seals in a cool, dry, and dust-free environment.

FAQ

Q1: Are these original OEM parts?
A: No. They are high-quality aftermarket replacements that meet or exceed OEM specs.
Q2: Can I customize seal kits for uncommon models?
A: Yes. Custom kits are available based on part numbers, machine models, or samples.
Q3: What’s the delivery time?
A: Standard kits ship in 2–5 days. Custom kits take about 7–10 days.
Q4: How are the seal kits packaged?
A: Each kit is packed in sealed bags or boxes with clear labels.

Applications

•Excavators
•Loaders
•Hydraulic Breakers
•Cylinders & Pumps
•Marine & Forestry Machinery

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