High-quality rubber O-ring for excavators

O-Ring Seal 5P-8356 for Excavator Hydraulic Systems YNF16809

Hydraulic O-ring 5P-8356 for sealing excavator system connections.

OEM reference number 5P-8356, widely used in CAT excavators and machinery
Made from high-grade NBR or FKM rubber, excellent oil and temperature resistance
Provides tight sealing in hydraulic pumps, cylinders, valves, and connectors
Precision-engineered to match original specs for leak-free performance
Suitable for bulk inventory and repair shop use

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O-Ring Seal Description

The YNF16809 O-ring seal, equivalent to part number 5P-8356, is used for static and dynamic sealing in excavator hydraulic systems. With high elasticity and resistance to oil, pressure, and wear, this O-ring is ideal for sealing gaps in hydraulic cylinders, pump housings, and valve blocks. It’s a must-have component for CAT machine repairs, hydraulic maintenance projects, and aftermarket stocking. Each O-ring is manufactured under strict dimensional and material control for reliable and consistent sealing.

O-Ring Seal Technical Sheet

Item	Details
YNF Code	YNF16809
OEM Part Number	5P-8356
Product Name	Seal-O-Ring
Material	NBR / FKM
Application	Hydraulic system sealing
Shape	Round cross-section
Temperature Range	-30°C to +200°C
Pressure Tolerance	Up to 40 MPa
Compatible Brands	Caterpillar, Komatsu, Volvo, etc.
MOQ	100 pcs
Country of Origin	China
Packaging	Individual bag + carton box
Shipping Options	DHL / UPS / FedEx / Sea / Air
Payment Methods	T/T, Western Union, L/C

O-Ring Seal Applications

Application Area	Description
Hydraulic Cylinders	Sealing rod, piston, and end cover joints
Pumps & Valves	Preventing oil leakage in high-pressure zones
Pipe Fittings	Static sealing between connectors
Repair Workshops	Routine replacement in excavator maintenance
Distributors	Suitable for O-ring kits and bulk resupply

O-Ring 5P-8356 Seal Detail Display

FAQs

Related Knowledge:

O-rings are critical sealing elements in both static and dynamic hydraulic applications.
Material choice (NBR for oil, FKM for high temperature) ensures long-term performance.
Regular inspection and replacement help reduce hydraulic fluid loss and downtime.

Related Products:

6V-6228 O-ring seal
Excavator seal kit assortments
Cylinder repair kits
Backup ring and dust seal combinations

FAQs:

Q: Can this O-ring be included in a custom kit?
A: Yes, we support O-ring kit customization based on your model list.
Q: What’s the shelf life of these O-rings?
A: Stored properly, NBR seals have a shelf life of 5+ years; FKM seals last longer.

Get Best Quote for O-Ring 5P-8356

Looking to stock high-quality O-rings for excavator hydraulic repairs? YNF16809 (5P-8356) is a trusted solution by mechanics and parts resellers worldwide. Backed by durable material and precise sizing, this seal helps prevent costly fluid leaks. Contact us today for wholesale pricing and technical assistance.

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O-Ring Seal 5P-8356 for Excavator Hydraulic Systems YNF16809

O-Ring Seal Description

O-Ring Seal Technical Sheet

O-Ring Seal Applications

O-Ring 5P-8356 Seal Detail Display

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