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HomeUpgrade & Repair KitsRepair & Service KitsHydraulicsCylinder Seal Kits266-7874: Hydraulic Cylinder Seal Kit - Standard Size
HomeUpgrade & Repair KitsRepair & Service KitsHydraulicsCylinder Seal Kits266-7874: Hydraulic Cylinder Seal Kit - Standard Size
Parts included in this kit

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170-9844: 84mm Inner Diameter Buffer Seal
170-9844: 84mm Inner Diameter Buffer SealQuantity: 1
170-9860: 83.4mm Inner Diameter U Cup Seal
170-9860: 83.4mm Inner Diameter U Cup SealQuantity: 1
095-1717: 3.1 x 114.4mm 90A NBR O-Ring
095-1717: 3.1 x 114.4mm 90A NBR O-RingQuantity: 1
143-8027: Hydraulic Cylinder Piston Ring
143-8027: Hydraulic Cylinder Piston RingQuantity: 1
165-9286: 82.70mm Inner Diameter Lip Type Seal
165-9286: 82.70mm Inner Diameter Lip Type SealQuantity: 1
143-8035: RING
143-8035: RINGQuantity: 1
7Y-5116: 85mm Inner Diameter Backup Ring
7Y-5116: 85mm Inner Diameter Backup RingQuantity: 1
147-5837: 113.87mm Inner Diameter Wear Ring
147-5837: 113.87mm Inner Diameter Wear RingQuantity: 1
247-8789: Hydraulic Cylinder Seal Ring
247-8789: Hydraulic Cylinder Seal RingQuantity: 1
087-5510: 115.2mm ID Bucket Cylinder Backup Ring
087-5510: 115.2mm ID Bucket Cylinder Backup RingQuantity: 1
9X-3592: 120mm Bore Diameter Two Piece Seal
9X-3592: 120mm Bore Diameter Two Piece SealQuantity: 1
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DescriptionSpecificationsCompatible Models
Description for part number 266-7874

Description: Cat® Hydraulic Cylinder Seal Kits contain all seals required for a complete reseal of a hydraulic cylinder. Attributes: Cat® Hydraulic Cylinder Seal Kits contain genuine Cat® seals, many of which feature proprietary materials and patented designs for superior compression set and broader temperature applications. All are matched to your application, helping to ensure top performance and long wear life. Also, because Cat® Hydraulic Cylinder Seal Kits provide all seals required for a complete reseal, customers are provided with a quick solution during time sensitive repairs. This ensures maximum uptime and productivity. Recommended Application: Cat® Hydraulic Cylinder Seal Kit application is specific to a cylinder group part number and incorporates the most recent engineering improvements.

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Warning:This product can expose you to chemicals including 1,3-Butadiene, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Specifications for part number 266-7874

We are still working on adding a specification for this part.

Compatible Models for part number 266-7874

EXCAVATOR

318C 318D L 315C 315D L 319C

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KeyKey
Factory Fit

This part is designed to fit your Cat equipment based on the manufacturer’s specifications.

Any changes to the manufacturer’s configuration might result in the product not fitting your Cat equipment. Please consult your Cat Dealer before purchasing to ensure that this part is appropriate for your Cat equipment in its current condition and assumed configuration. This indicator cannot guarantee compatibility for all parts.

Remanufactured

Non-Returnable

Kit

Replaced

Remanufactured

Non-Returnable

Kit

Replaced