Northfield Precision Instrument Corp. specializes in developing custom solutions for difficult problems. In this case, a customer who manufactures delicate ceramic rings (shown in the foreground of the image) needed a way to carefully hold the rings on the OD so they could grind the ID.

The customer requested that no metal touch the parts. Northfield adapted their 6" diaphragm chuck with custom top tooling made from abrasion-resistant plastic (without a filler). These items can be quickly changed for new ones should a future need arise.