how do you clean under the blade of the vitamix one? stuff keeps getting stuck in the seal.

Diagnosis

The buildup occurs because the Vitamix ONE Compact Blender utilizes a removable blade assembly with a precision-fit bearing seal. When blending thick ingredients—such as nut butters, frozen fruits, or fibrous greens—small particles are forced downward by the centrifugal action of the blades, becoming wedged in the narrow gap between the rotating blade shaft and the rubber gasket of the seal. Over time, these trapped particles can oxidize or harden, creating a "ring" of residue that doesn't clear during a standard self-cleaning cycle. If you notice a slight grinding sound, a lingering smell of old food, or visible dark debris clinging to the underside of the blade assembly after rinsing, the seal has become compromised by organic buildup. This can eventually lead to leaks or premature wear of the bearing if the debris acts as an abrasive.

How to Fix It

To thoroughly clear the seal and remove trapped debris without damaging the bearing, follow this deep-cleaning sequence:

1. Fill the blender container exactly halfway with warm water (approximately 110°F to 120°F). Do not use boiling water, as extreme heat can warp the rubber seal.
2. Add two drops of concentrated grease-cutting dish soap. Avoid using heavy detergents that may leave a chemical residue on the seal.
3. Secure the lid and the lid plug firmly. Start the blender at Variable Speed 1 and quickly ramp up to the maximum speed setting. Run the motor at full speed for 45 to 60 seconds. This creates a high-pressure vortex that forces water into the seal gap to flush out particles.
4. Pour out the soapy water and rinse the container with cool water.
5. Remove the blade assembly from the container by twisting it counter-clockwise.
6. Hold the blade assembly over a sink and use a dedicated nylon bottle brush or a thin interdental brush to scrub the perimeter of the seal where the blade shaft meets the rubber. Gently scrub in a circular motion to dislodge any remaining stubborn grit.
7. Rinse the assembly under a high-pressure stream of water, rotating the blade manually to ensure all gaps are clear.
8. Dry the assembly completely with a lint-free cloth before re-installing it into the container.

If That Didn't Work

• The Vinegar Soak: If the buildup is mineral-based or contains hardened protein, fill the container with a solution of 50% white distilled vinegar and 50% warm water. Let it sit for 30 minutes without blending. The acidity breaks down the bond between the food particles and the rubber seal. Follow this with a standard soap-and-water blend cycle.
• Manual Blade Rotation: With the blade assembly removed from the container, use your finger (carefully) or a plastic tool to rotate the blade shaft clockwise and counter-clockwise several times while submerged in a bowl of warm soapy water. This "pumps" the seal and forces trapped debris out of the bearing housing.
• The Toothpick Method: For visible, hardened chunks of food stuck in the seal gap, use a wooden toothpick or a plastic cocktail pick. Gently slide the tip into the gap between the shaft and the seal to flick out the debris. Avoid using metal needles or screwdrivers, as scratching the stainless steel shaft will create grooves where food will trap even more easily in the future.
• Replacement of the Assembly: If the seal is leaking fluid or the debris has caused a permanent pit in the metal, the bearing is compromised. Because the Vitamix ONE blade assembly is a sealed unit, it cannot be serviced internally. You will need to replace the entire blade assembly unit to restore a sanitary seal.

Heads Up

• Avoid "dry blending" hard ingredients for extended periods, as the friction heat can soften the seal and allow more debris to penetrate the bearing.
• Never put the blade assembly in the dishwasher; the high heat and harsh chemicals can degrade the rubber seal and strip the lubrication from the bearings.
• Always ensure the blade assembly is fully locked into place before starting the motor to prevent uneven wear on the drive socket.
• Perform a "clear-out" blend cycle every 5-10 uses even if the container looks clean, as microscopic buildup can accumulate unseen under the blades.