Actually, it seems to be a composite material, not sure if it's plastic. Someone was a bit too heavy for a chair here at work and cracked the seat. It's a $1200.00 chair, so I saved it from the trash.
J-B Weld is basically unchanged from the product first sold over 20 years ago. Now, J-B Kwik and Clean And Prep have been added to the product line. J-B Kwik offers the same ease of use, performance ...