Sealing Ring A 651 091 04 60 64

Ensure leak-free operation of your Mercedes-Benz’s fluid systems with the genuine sealing ring (part A 651 091 04 60 64). Engineered to exact factory tolerances, this ring creates a durable barrier between mating components, preventing oil or coolant seepage under all operating conditions.

Key Benefits

• Exact OEM Fit
  Manufactured to Mercedes-Benz CAD specifications for a perfect drop-in replacement—no trimming or modification required.

• Dual-Material Construction
  Combines a corrosion-resistant metal core with a high-performance elastomer sealing lip to maintain compression and resilience.

• Leak-Proof Performance
  Precision press-fit profile ensures uniform contact pressure, preventing fluid crossover and maintaining system integrity.

• Thermal & Chemical Resistance
  Elastomer compound resists heat, engine oils, coolants and hydraulic fluids, ensuring long service life in harsh environments.

• Versatile Application
  Ideal for sealing oil cooler housings, thermostat covers, hydraulic pump flanges and other critical junctions.

Technical Specifications

• Part Number: A 651 091 04 60 64

• Material: Stainless-steel ring with bonded NBR elastomer seal

• Inner Diameter: 28 mm

• Outer Diameter: 34 mm

• Cross-Section Thickness: 2 mm

• Temperature Range: –40 °C … +150 °C

• Chemical Compatibility: Engine oil, coolant, brake fluid, hydraulic oil

• Warranty: 24 months genuine-parts coverage

Installation Overview

1. Prepare Surfaces: Thoroughly clean both mating faces, removing old sealant and debris.

2. Position Seal: Place the sealing ring squarely over the male flange or bore.

3. Align Components: Carefully bring the mating part into position to center the ring.

4. Torque Fasteners: Tighten bolts in a crisscross pattern to the Mercedes-Benz specified torque, ensuring even compression.

5. Inspect for Leaks: After system pressurization or engine start-up, check for any signs of seepage.