Stethoscope Tips

How to Remove your MDF® Instruments Diaphragm and Retaining Ring from the Chestpiece


Your diaphragm is the airtight seal drum with the MDF® logo and the retaining ring in the rubber piece around it securing the part on the stethoscope. This side of the dual head chest piece is used to listen to high frequency sounds. Sometimes the diaphragm will crack or get dirty after sometime of use, this is why we offer it under our Free-Parts-For-Life program! We are here to assist with the process to change out your stethoscope parts for fresh ones.

To remove the diaphragm and retaining ring from your stethoscope, put pressure on the outer edge of the retaining ring using your thumbs pushing it down, away from the chestpiece. This will loosen the diaphragm. Then continue to pull the retaining ring up and over the chestpiece.

Free Shipping & Returns

Free shipping on Orders over $49.99
Need we say more?

90-Day GUARANTEE

We like to keep things simple. If you’re not satisfied, you have 90 days to return your order.

LIFETIME WARRANTY

Because of our relentless pursuit of quality, we back our stethoscopes with a Lifetime Warranty.

Shop engravable stethoscopes

MDF® INSTRUMENTS

WATCH MORE VIDEOS

UNSUNG BORICUA

An island, its people, and a man in the pursuit of a brighter future. A story that sheds light on resilience, and how we can always get back up, no matter how many times we’re knocked down.

View Details

All About The PA World With @rebeccawestcoastpa Psychiatry

MDF Instruments Crafting Wellness Podcast sat down with with Rebecca, a passionate Psychiatry PA. In this episode, Rebecca shares her inspiring journey of becoming a PA, overcoming the challenges of PA school, and finding a healthy work-life balance.

View Details

Above and Beyond: Life in the Skies as a Flight Transport Nurse

Discover the world of transport nursing as we chat with Flight Nurse Hensley. Whether you're a healthcare professional interested in pursuing a career in transport nursing or simply curious about the behind-the-scenes of this exciting profession this episode offers a captivating glimpse into the world of flight nursing.

View Details

Newsletter

Sign up to receive 10% off your first purchase!