O-Ring 20443765

Maintain reliable sealing in your Volvo’s fluid circuits with the genuine O-ring (part 20443765). Manufactured to Volvo’s exact specifications, this high-precision seal provides consistent compression and superior resistance to heat, pressure, and chemicals.

Key Benefits

• Exact OEM Fit
  Engineered to Volvo CAD dimensions for drop-in replacement—no resizing or adapters required.

• Premium Nitrile Construction
  Automotive-grade NBR rubber resists oil, coolant, and hydraulic fluids across temperatures from –40 °C to +120 °C.

• Leak-Proof Performance
  Uniform cross-section and smooth finish deliver even compression around the entire circumference, preventing fluid seepage.

• Chemical & Temperature Resistance
  Formula withstands engine oils, coolants, and brake fluids without hardening, swelling, or cracking.

• Long Service Life
  Designed to endure high-pressure cycles and harsh environments, extending maintenance intervals.

Technical Specifications

• Part Number: 20443765

• Material: Nitrile rubber (NBR)

• Inner Diameter: 30.0 mm

• Cross-Section Thickness: 2.5 mm

• Temperature Range: –40 °C … +120 °C

• Compatibility: Fits Volvo models specifying this O-ring; verify via VIN or service manual

Installation Overview

1. Clean Mating Surfaces: Remove old seal and debris; ensure surfaces are dry and free of contaminants.

2. Lubricate O-Ring: Lightly coat with the system’s fluid (oil or coolant) to ease installation and prevent pinching.

3. Seat Seal: Place the O-ring evenly in its groove, avoiding twists.

4. Assemble Components: Carefully mate parts, ensuring the O-ring remains centered.

5. Torque Fasteners: Tighten bolts or fittings to manufacturer specifications to achieve uniform compression and a leak-free seal.