Oil Bubbler Cap (M3331) for Merrow Industrial Sewing Machines
Ensure your machine’s lubrication system is operating at peak visibility and safety with the Oil Bubbler Cap (Part #M3331). This authentic Merrow component is designed to provide a clear, durable window into your machine’s oil flow, allowing operators to verify that internal components are receiving the proper lubrication during high-speed production.

The "bubbler" system is the heartbeat of a Merrow machine's maintenance routine. Choosing a M3331 ensures a perfect seal and long-lasting clarity that generic plastic caps cannot provide.

Key Advantages of the Merrow M3331 Cap
The oil bubbler cap is a small but vital part of the machine's cooling and lubrication ecosystem. The M3331 offers:

High-Clarity Polymer: Manufactured from specialized,

Orders are typically processed within 1–3 business days.

We ship from our Georgia, USA warehouse. If an item is temporarily unavailable in the U.S., we source it through our global supplier network and will notify you of the estimated lead time.

Free shipping is available on U.S. orders over $99.

Once your order ships, you will receive a tracking number by email.

For urgent orders or shipping questions, please contact us before placing your order.

We stand behind the quality of the products we sell.

• Genuine OEM parts are covered by the manufacturer's warranty where applicable.

• Aftermarket and generic parts are covered against manufacturing defects.

• If you receive a damaged, defective, or incorrect item, please contact us within 30 days of delivery.

• Warranty does not cover damage caused by improper installation, misuse, normal wear, or modifications.

If you have any questions, our support team is happy to help before or after your purchase.