Air Sentry® - The Gold Standard in Contamination Control Air Sentry breathers first set the gold standard with their introduction in 1997. Achieving near total control of fluid system contamination, Air Sentry has led the industry by improving productivity, prolonging fluid life, reducing maintenance costs and controlling expensive downtime. The pace of a competitive world absolutely requires this level of performance. Air Sentry breathers are designed to replace the breather cap or air filter on gear boxes, hydraulic fluid reservoirs, bulk storage tanks, oil drums, oil-filled transformers and other fluid reservoirs. Air Sentry desiccant breathers adsorb water from the air before it enters your fluid system and remove particulate contaminants as small as 2 microns. The silica gel changes color as it becomes depleted, turning from gold to dark green. It's easy to identify the condition of a breather and quickly replace it, maintaining the cleanliness of the fluid reservoir. airsentry.com 855-242-2792 A product line of Whitmore
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The Air Sentry annual revenue was $23 million in 2026.
Air Sentry is based in Rockwall, Texas.
The NAICS codes for Air Sentry are [42, 541, 54, 423, 5413, 54133].
The SIC codes for Air Sentry are [507, 50].