KOMATSU 07002-13634 O-RING

The Komatsu 07002-13634 O-Ring is a genuine sealing component engineered for the hydraulic circuits of Komatsu’s D135A and D155A series dozers. Fitted within pump housings, cylinders, or valve joints, it forms a tight barrier that keeps hydraulic fluid contained under pressure while blocking dirt and moisture from entering the system — a simple function, but one that has a direct bearing on how consistently the machine’s hydraulics perform over time.

Produced to Komatsu’s factory specifications, this O-Ring is molded from a durable elastomer compound formulated to hold up against hydraulic oil, grease, sustained pressure, and the temperature shifts that come with regular field use. Its material stays flexible rather than stiffening or cracking under repeated stress, which lets it maintain a reliable seal through long operating hours. Precision molding keeps its dimensions consistent, so it fits correctly on installation and continues to perform without the gradual leakage that lower-quality substitutes are prone to.

On dozers built for heavy, continuous work, hydraulic reliability isn’t optional — a failing O-Ring here can mean slow pressure loss, oil seepage, or contamination reaching more expensive components downstream. Replacing this seal with a genuine part at the right maintenance interval is a low-cost way to protect the pump and cylinder assemblies it supports and keep the machine running at full capacity.

Technical Features

• Genuine Komatsu-spec O-Ring
• Durable elastomer material
• Resistant to hydraulic oil, grease, and pressure fluctuations
• Maintains flexibility under temperature swings and heavy use
• Precision-molded for consistent, accurate fitment
• Helps prevent leakage and contamination in hydraulic circuits
• Built for reliable performance on large dozer platforms

Compatible Machine Models

Komatsu Bulldozer

• D135A-1
• D135A-2
• D155A-2A

Alternative Part Numbers

• 07001-01009
• 07000-12105
• 23B-22-11380

Shop & Supply keeps the Komatsu 07002-13634 O-Ring in stock and ready to ship, as part of a broader lineup of genuine Komatsu seals for dozer hydraulic systems. Choosing the original part means the fit, material grade, and pressure tolerance match exactly what your D135A or D155A was built for — dependable sealing performance without the guesswork of an aftermarket substitute.