plug bung 472 x 354 x 748

Plugs (Bungs)


Plugs(Bungs) are used for leak locating in tandem with the JLS Mag Machine

Use one plug with the JLS Mag Machine and another plug to seal the end of the instrument.

View Dimensions:

Plug (Bung) Measurement Chart

Click the link above to view our measurement chart.



Our tapered neoprene plugs are offered primarily to help you plug holes in order to locate and isolate leaks. They are most often used when using the MAG Machine in order to seal off sections of tubing, the instrument’s bore, tone holes, and ports. These are also used to plug tubes on brass instruments when cleaning, stripping, polishing and lacquering. Neoprene plugs are essential tools that belong on every serious technician’s bench.

Measurements listed are for the Bottom Diameter, Top Diameter and Length in inches and mm.

Plug (Bung) Measuring Chart

Shipping & Delivery

Please note: Express & Overnight Shipping deliveries will require a signature. Please ensure someone is available at the delivery address to provide a signature to avoid any issues.

Domestic Shipping
Economy $10.95
FedEx Ground Shipping $15.95
FedEx 2 Day $34.95
FedEx Overnight $44.95
International Shipping Puerto Rico and Guam Canada and Mexico International General
USPS Economy $9.95 $29.95 N/A
USPS Priority Mail International N/A $49.95 $59.95
FedEx International Economy $29.95 $39.95 $44.95
FedEx International Priority $39.95 $49.95 $69.95

Please be aware that orders with certain products may take longer to deliver depending on their stock levels and lead times.

For information about our Return Policy, please check here.