Trademark Disclaimers SilcoSoft® is a registered trademark of BGF Industries, Inc. in the United States and other countries. belChem®, BELCOTEX®, BELCOTHERM® and SILEX®  are registered trademarks of belChem fiber materials GmbH.  Kevlar® is a trademark of DuPont. Twaron® is a trademark of Teijin Aramid BV. S2 Glass® is a registered trademark of AGY, LLC. Viton® is a registered trademark of DuPont Dow Elastomers LLC. Teflon® is a registered trademark of DuPont.