Komatsu genuine O-rings-600-184-1671

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Komatsu Bulldozers

Komatsu genuine O-rings-600-184-1671

PRODUCT DESCRIPTION:

The 600-184-1671 O-ring is engineered for Komatsu D65/D85 bulldozer hydraulic systems and walking mechanisms, featuring high-pressure static sealing and low-mobility sealing. It is compatible with hydraulic pipe joints, pump valve housings, and walking reducer end covers. With precise factory dimensions, high-pressure resistance, and anti-aging properties, it ensures reliable sealing in hydraulic and transmission systems, minimizing leakage and maintenance risks.

PRODUCT DETAILS

Core Features

High-pressure sealing and leak prevention: An elastic sealing ring is formed between the groove and the mating surface, preventing internal leakage of hydraulic oil/gear oil and the intrusion of external mud and water.

Gap compensation: The elastic rubber fills the tiny gaps at the mating surface, offsetting assembly errors and thermal expansion and contraction, ensuring stable sealing.

Media isolation: Isolates hydraulic oil/gear oil from external impurities, preventing oil contamination, oxidation, and component corrosion.

Shock resistance and buffering: The elastomer absorbs high-pressure pulses and vibrations, reducing the risk of failure caused by impacts to the sealing surface.


Product Superiority

Original factory precision fit: Dimensions and groove tolerances perfectly match, allowing for direct replacement without adjustment and preventing leakage due to improper gaps.

High-pressure adapter material: Nitrile rubber (NBR) / Fluororubber (FKM, some batches), resistant to mineral oil and aging, suitable for high-pressure hydraulic conditions.

Durable sealing: High compression rebound rate, not easily deformed by plasticity over long-term use, static seal life ≥4000 hours, light dynamic seal life ≥2000 hours.

Strong extrusion resistance: Suitable for high-pressure conditions, can withstand higher pressure with a retaining ring, reducing the risk of high-pressure extrusion damage.

Easy installation: No special tools required, simply insert into the groove, reducing replacement difficulty and time.


Installation and Maintenance Points

Before installation, clean the sealing groove and mating surface to remove burrs, oil, and impurities to avoid scratching the O-ring surface.

During installation, avoid twisting or stretching. After embedding into the groove, ensure even fit. For high-pressure areas, it is recommended to use a retaining ring to prevent extrusion.

Tighten the bolts symmetrically to the specified torque to avoid localized overpressure that could damage the O-ring.

Check for leaks every 2000 hours and replace the O-ring every 4000 hours to prevent aging and failure.


Fit scenarios and value

Suitable for: High-pressure static and light-moving seals in hydraulic pumps/valves, travel gearboxes, hydraulic pipelines, etc., suitable for heavy-duty, high-pressure operating environments.

Core benefits: Prevents high-pressure oil leakage, protects hydraulic and transmission components, extends system life, and reduces downtime maintenance costs.

SPECIFICATION

Project

Details

Part Number

600-184-1671 (Komatsu genuine O-rings, compatible with high-pressure static seals + light-speed dynamic seals)

Compatible Models

Komatsu D65 (EX/PX/WX), D85 (EX/PX/WX) series bulldozers (including mainstream sub-models such as D65E 12 and D85E 12)

Compatible Parts

Hydraulic pump/multi-way valve housing static seal grooves, travel gearbox end covers, hydraulic pipeline joints, steering cylinder end covers static seal points

Core Category

High-pressure compatible O-rings (compatible with static seals and low-speed dynamic seals)

Compatible Operating Conditions

Suitable for mining/construction work environments with high-pressure hydraulic shock, oil temperatures of 80–100℃, and dust vibration.


Parameter Items

Values

Notes

Cross-section Diameter

Approx. 3.55 mm (standard high pressure specification)

Compatible with high-pressure sealing grooves

Inner Diameter

Approx. 50–60 mm (slight variations may occur with random types)

Precise factory matching of mounting positions

Material

Nitrile butadiene rubber (NBR) / Fluororubber (FKM)

High-pressure resistant, oil resistant, compatible with hydraulic oil

Operating Temperature

-30℃ to +120℃

Coveres the hydraulic system oil temperature range

Operating Pressure

≤31.5 MPa (static seal); ≤10 MPa (light moving seal)

Suitable for high-pressure operating conditions in hydraulic systems

Hardness

70–85 Shore A

Balances sealing and extrusion resistance

Tensile Strength

≥16 MPa

Ensures durability during installation and use, preventing breakage over long term

Compression Set

≤18%(70℃×72 h)

Stable sealing


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