3M Diffusion Furnace Products, Standard Collar/ Disc 2" Thick X 6" Inner Diameter X 12" Outer Dia...

3M Diffusion Furnace Products, Standard Collar/ Disc 2" Thick X 6" Inner Diameter X 11" Outer Dia...

3M Diffusion Furnace Products, Standard Collar/ Disc Country of Origin: United States

3M Diffusion Furnace Products, Standard Collar/ Disc 2" Thick X 17" Inner Diameter X 20.5" Outer ...

3M Diffusion Furnace Products Nextel 550 Collar 2" Thick X 7" Inner Diameter X 12.5" Outer Diameter Country ...

3M Diffusion Furnace Products Nextel 550 Collar, 2" Thick X 8" Inner Diameter X 10.5" Outer Diameter Country...