As a veteran tech, you know that vibration-induced failure is the leading cause of leaks at pressure control points. The Johnson Controls SEC99AB-60 (identical to the SEC99AB-60C) is an industrial-grade UltraCap Armored Capillary designed to isolate these mechanical stresses. Featuring a 60-inch length and a 0.062 internal diameter, this armored capillary tubing utilizes a copper internal line shielded by a rugged brass armor sleeve. This construction prevents the kinking and abrasion common with standard copper tubes. The 1/4" SAE female flare connectors include one straight fitting and one 90-degree elbow, both equipped with integral Schrader valve depressors to ensure seamless pressure readings without refrigerant loss. Rated for 600 psi maximum working pressure and a temperature range of -50?F to 350?F, it is a versatile OEM replacement part for any PENN pressure-actuated control setup. Whether you are routing around tight cabinet corners or connecting to a high-side liquid line, this pressure control hose provides the flexibility and pulsation dampening required for long-term reliability in commercial refrigeration and HVAC systems. Key Benefits for the Contractor Vibration Resistance: The brass armor sleeve protects the inner copper capillary tube from abrasion and work-hardening caused by compressor shimmy. Pulsation Dampening: The small 0.06" orifice effectively smooths out pressure spikes, protecting sensitive HVAC pressure controls. Leak Prevention: Unlike standard field-fabricated lines, the UltraCap design eliminates refrigerant effusion and minimizes the risk of stress fractures at the 1/4 SAE flare joints. Installation Versatility: The combination of straight and 90-degree fittings allows for cleaner routing in cramped mechanical rooms and rooftop units. Refrigerant Compatibility: Fully compatible with all common non-corrosive refrigerants used in modern refrigeration applications. Common Questions & Technical Insights What is the difference between the SEC99AB-60 and the SEC99AB-60C? Technically, they are identical. The "C" suffix typically denotes a commercial packaging or bulk designation, but the specifications, materials, and 60-inch length remain exactly the same for both armored capillary models. Can I use this for ammonia systems? No. The copper capillary and brass fittings are not compatible with ammonia. Use this only with standard non-corrosive refrigerants to avoid rapid material degradation and system failure. How tight should the 1/4" flare nuts be torqued? Industry best practice for these forged brass nuts is to hand-start to avoid cross-threading, then tighten with a 5/8" wrench to approximately 10 lb-ft. Over-torquing can damage the internal copper stem and lead to leaks. Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
