Description
Johnson Controls SEC99AA-48 UltraCap Armored Capillary Overview
The Johnson Controls SEC99AA-48 is part of the UltraCap series of armored capillary tubes, engineered for reliable temperature sensing in demanding commercial and industrial HVAC applications. The rugged armored construction protects the capillary from mechanical damage, vibration, and harsh installation environments, making it an ideal choice for both new installations and replacement projects.
Key Features
- UltraCap armored capillary design for superior mechanical protection and long service life
- 1/4″ SAE Female Flare fitting for secure, leak-free connections to standard HVAC/R components
- 0.06″ internal capillary diameter for precise fluid or gas transmission and accurate temperature response
- First tube configured straight with depressor for easy bulb insertion and positive contact with sensing surfaces
- 48″ capillary length provides installation flexibility across a wide range of equipment configurations
- Compatible with Johnson Controls thermostats, controllers, and sensing systems
- Durable armored outer sheath resists kinking, crushing, and abrasion during installation and operation
Product Specifications
- SKU: SEC99AA-48
- Series: UltraCap Armored Capillary
- Fitting Type: 1/4″ SAE Female Flare
- Internal Capillary Diameter: 0.06″
- First Tube Angle: Straight with Depressor
- Capillary Length: 48″
- Brand: Johnson Controls
Applications
The SEC99AA-48 is suited for use with commercial thermostats, temperature controllers, and HVAC sensing assemblies where a durable, armored capillary connection is required. The SAE Female Flare fitting ensures compatibility with standard refrigeration and HVAC fittings, while the straight-with-depressor tube angle simplifies bulb installation in tight or recessed locations.







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