Ultem Pei Sheet - Web the ultem™ resin family of amorphous thermoplastic polyetherimide (pei) materials offers outstanding. Ultem pei sheets and bars. Web ultem pei sheets and bars.
Ultem pei sheets and bars. Web ultem pei sheets and bars. Web the ultem™ resin family of amorphous thermoplastic polyetherimide (pei) materials offers outstanding.