Locking ring for Moulinex BlendUp LM19H4 LM19JE MS-653703 blender

Bottom locking ring designed for attaching the blade assembly to the jar of Moulinex blenders. This component, part number MS-653703, is installed in the lower part of the jar and keeps the blade assembly correctly tightened against the container. This blender locking ring is essential for the correct assembly of the blade base and its gasket. Compatible with the models listed at the end of the description.

Technical specifications
- Original Moulinex spare part
- MPN (Manufacturer Part Number): MS-653703
- EAN code: 3221616144736
- Country of manufacture: Made in China
- Material: plastic
- Color: black
- Compatible series (check the models under compatibility): BlendUp
- Product codes: BL906M1

Dimensions personally checked by the PG Service team
- Outer diameter 92mm
- Center hole diameter 51mm
- Height 34mm

What is its function?
The locking ring screws into the lower part of the jar and holds the blade assembly in the intended position. In a blender, this component is generally used to ensure the correct mechanical attachment between the jar, blade assembly, and sealing components. When the locking nut is correctly fitted, the blade assembly remains secure and the gasket can exert even pressure on its seat. Incorrect tightening can instead cause play, vibrations, or leaks from the bottom of the container.

Symptoms: what problems can a faulty locking ring cause?
- Does the blade assembly move or show play in the jar? A worn or off-center locking nut can prevent the blade assembly from remaining securely locked.
- Does the ring turn without tightening? If the locking nut spins freely, the internal thread or its seat may be worn.
- Is it difficult to screw or unscrew the ring? Dirt in the grooves, deformations, or a damaged thread can make it difficult to rotate the locking ring.
- Does the jar leak liquid from the blade assembly area? Insufficient tightening of the ring can prevent the blade base gasket from being correctly compressed.
- Do you notice vibrations or noises coming from the bottom of the jar during operation? If the ring does not keep the blade assembly securely attached, high-speed movement can cause noise and instability.
- Does the ring show cracks, broken parts, or deformed areas? It is advisable to replace the locking ring because a damaged structure may no longer guarantee the correct tightening of the blade assembly.
- Does the locking nut tend to loosen after a few uses? Check that the thread is intact, that the ring is mounted on center, and that there are no residues on the contact surfaces.

How to preserve the component's lifespan
Periodically cleaning the locking ring and the screw surfaces reduces the risk of jams, buildup, and off-center mounting. Use non-aggressive products and non-abrasive tools to clean the locking nut without damaging the thread. Periodically check that the ring shows no breaks, wear in the gripping areas, or unusual difficulties during tightening. If the ring no longer tightens correctly, it is advisable to replace it to prevent the blade assembly from remaining unstable.

Installation instructions
- Separate the jar from the motor base and locate the locking nut placed under the blade assembly.
- Carefully remove the locking ring, holding the blade assembly and the other base components in position.
- Carefully check and clean the screw seat so that the new nut can be correctly fitted.
- Correctly position the blade assembly and gasket, then screw the new ring while keeping it perfectly on center.
- Tighten the ring until a stable attachment is achieved without applying excessive force.
- Before use, partially fill the jar with water and check that the blade assembly is stable and shows no leaks.

PG Service customer support center advice
- Before fitting the locking ring, we recommend carefully cleaning the thread and the blade assembly mating surfaces. Food residues or dirt can indeed prevent the locking nut from tightening correctly and promote play or leaks. To extend its lifespan, screw the locking nut evenly without using excessive force that could damage the thread or deform the component. After use, immediately remove any residues from the blade assembly area with lukewarm water and mild detergent. The most common causes of damage are over-tightening, crooked mounting, impacts, and dirty threads.

Do you need anything else?
In addition to the replacement bottom ring, we have thousands of original Moulinex accessories and spare parts available in our shop. If you cannot find what you need through the search, you can contact us at any time, and we will respond very quickly, even on holidays and weekends. And if a product is not available, we will do everything possible to find it and order it especially for you. You can find much more with us besides spare parts for Moulinex blenders!

Compatibility (is it right for my product?)
This bottom ring is tested for use on the following Moulinex blender models. Always check the identification label of your appliance to ensure that the spare part is compatible with your model. If in doubt, contact us:

Compatible with Tefal

Blend Up
BL190A
BL190E
BL19H4
BL19JE
BL190AF0/870
BL190EG0/870
BL19H4B1/870
BL19H4B2/870
BL19H4F0/870
BL19H4G0/870
BL19H4X0/870
BL19JEF0/870

Compatible with OBH Nordica

Blend Up
LH190E
LH19HA
LH190EN0/870
LH19HAN0/870

Compatible with Moulinex

Blend Up
LM190A
LM19H4
LM19JE
LM190AF0/870
LM19H410/870
LM19H4F0/870
LM19H4M0/870
LM19JEF0/870