About Us

Headquartered in Rockwall, Texas, Air Sentry® is a global leader in developing and manufacturing state-of-the-art contamination control products. Our products are considered the gold standard in contamination control and are used worldwide in major industrial, mining, military, power generation and fluid storage applications.

Air Sentry Breathers were introduced in 1997 to satisfy an obvious and growing requirement in industry—to increase fluid cleanliness, thus decreasing skyrocketing maintenance costs and equipment failure. Air Sentry was a finalist in Plant Engineering's Product of the Year in 1999 and 2003 for innovative developments in breather technology.

With multiple product lines that maintain an outstanding level of quality, we continue to advance the fight against contamination. Air Sentry breathers are manufactured under strict ISO 9001 and ISO 14001 Certified Quality Systems in the United States. Our products are available around the world through a service-intensive distributor network committed to technical support and total customer satisfaction.


Air Sentry is proud to be part of Whitmore. Whitmore was founded in 1893 by Samuel Whitmore in Cleveland, OH. Whitmore has kept the wheels of industry turning by being a global leader in manufacturing innovative component protection technology products. Specialized industrial lubricants, coatings, sealants, rail equipment, and contamination control products, with broad product applications, are manufactured for a variety of industries. Through our service intensive distribution network, Whitmore products, including Air Sentry's, are shipped to and used in over 100 countries around the world.

Since 1979, Whitmore has operated as a wholly-owned subsidiary of Capital Southwest Corporation, a Dallas-based investment company. Whitmore is regarded as the industry leader in the development of eco-friendly high performance products since the late 1980's. Whitmore is fully compliant with and monitored by the Texas Commission on Environmental Quality, Texas Department of State Health Services and the Environmental Protection Agency.

Whitmore Kats Coatings Oil Safe