K&W has sustained its reputation for the best DIY leak solutions since 1938 when the company introduced Permanent Metallic™ Block Seal, one of the first coolant additives to provide permanent repair. CRC acquired K&W in 1999 with its leading automotive brand names: Block Seal, Trans-X® and Copper Coat®. CRC continues to bring innovative leak solutions to market under the K&W brand, such as Permanent Head Gasket & Block Repair with Nanotechnology and new FiberLock™ Pour & Go Head Gasket & Block Repair. CRC Industries, Inc., manufacturer of BRAKLEEN® Brake Parts Cleaner, is a worldwide leader in the production of specialty chemicals for the do-it-yourselfer and maintenance professional, serving the automotive, heavy duty, hardware, electrical, industrial and aviation markets. CRC is ISO 9001:2008 certified and adheres to the strictest guidelines for quality in all facets of research, development and production.