Shop Nitrile (Buna-N) Coupling Inserts

Magnaloy Coupling’s full range of flexible inserts permit custom design performance for a wide range of applications. All insert materials offer complete electrical insulation, as Magnaloy’s design eliminates all metal-to-metal contact. Magnaloy Coupling Insert part numbers may be specified using the following format:

Start with the letter “M” for Magnaloy, followed by the 3 digit Basic Insert Number Code (170, 270, etc.), then the specific single letter Insert Material Code.

Nitrile Buna-N (Code B) Inserts, Blue Material

Nitrile (Buna N)(Code B) - Painted Blue. Excellent material with petroleum products. Excellent compression set and abrasion 

resistance characteristics. Temp range -60F to +250F (-51C to +121C).


Click on the model number in the chart below to view that insert. 


Model Number

Use with Coupling Model

100 Series

200 Series

300 Series

400 Series

500 Series

600 Series

700 Series

800 Series



Don't see what you need? Custom and special order coupling inserts may be available. Give us a call, we'd be delighted to help.