Hydrometer Rubber Replacement Kit



This Replacement Rubber Kit will rejuvenate and keep your hydrometer set in good working condition. Use this red natural rubber set to replace cracked and dry-rotted rubber on your battery, antifreeze, windshield washer fluid sets. Use our black nitrile rubber set for your API, diesel, home heating fuel, and Nitromethane testers. This item is not intended for use with other brand testers. For best results, use only Brady Instruments brand testers.

Free shipping to the lower 48 states only.

If you have any questions about our products, please give us a call. (717) 453-7171
We have trained technicians waiting to answer your questions!
Our hours of operation are Monday thru Thursday 7 AM-5 PM EST.


Check out the pdf below for more information on assembly:

General Syringe Set Assembly Instructions WEB

Additional information


Hydrometer Rubber Replacement Kit–Nitrile (black), Hydrometer Rubber Replacement Kit–Natural (red)