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Learn more by watching our NYLOG BLUE RT201B | Gasket & Thread Sealant 30ml video.
The Nylog Blue RT201B is a gasket and thread sealant made from synthetic refrigeration grade compressor oil, supplied in a 30ml bottle. The RT201B is a viscoelastic compound that stays fluid and never dries or becomes heat fixed to the surface it is applied to. It is fully miscible and compatible with all system refrigerants and refrigeration oils.
Threaded and flare connections on refrigeration and air conditioning circuits are a common source of slow high pressure leaks. A sealant that dries hard or heat sets can crack at the joint and let refrigerant escape, or lock the fitting so it cannot be opened for service. The RT201B forms a hydraulic seal on threaded connections that blocks high pressure leaks while staying temperature and vibration resilient. It stays workable on the joint rather than setting solid.
On the tools, the RT201B doubles as a high tack assembly lubricant, so it seats and seals a connection in one pass instead of carrying a separate lubricant and sealant. The compound is fully miscible with system oils and refrigerants, so it suits flares, gaskets, and internal components without adding a second product to the van. Because it never becomes heat fixed, a coated joint can still be dismantled later for servicing. A thin application on each connection is enough to maintain the seal.
The RT201B is not a refrigerant and does not replace correct flare, brazing, or torque practice on a joint. It is not a thread-locking compound and should not be relied on to hold fasteners mechanically. Over-application adds nothing to the seal, so keep the coat thin on each connection.
Verified Sparky Direct customer reviews: Nylog Blue RT201B Gasket and Thread Sealant 30ml (RT201B)
"I use a little amount on flaring cone, makes a great flare." — George
"Works great to stop any leaks" — Gus
"Works great. Appears to be genuine stuff that never sets" — Kimbo
(RT201B)
Apply a thin coat of Nylog Blue RT201B to the flare face, gasket, or male threads before assembly. The compound acts as a high tack assembly lubricant during tightening, then forms a hydraulic seal on the joint. A little goes a long way on each connection.
The sealant is fully miscible and compatible with all system refrigerants and refrigeration oils. This makes it suitable across common HVAC and refrigeration circuits without reacting with the working fluid. It is made from synthetic refrigeration grade compressor oil.
The Nylog Blue RT201B and the Nylog Red RT200R are both gasket and thread sealants in the Nylog range. The RT201B is made from synthetic refrigeration grade compressor oil and is fully miscible and compatible with all system refrigerants and oils.
Nylog Blue does not dry out or become heat fixed to the surface it is applied to. Because a coated joint does not bond, it can be opened again later for service without the compound locking the parts together.
The RT201B is a non-setting sealant and assembly lubricant, not a thread-locking compound. It seals and lubricates joints but does not harden to lock fasteners in place. Use a dedicated thread locker where a mechanical locking bond is required.
Nylog Blue can be used on flare connections, gaskets, and threaded fittings. It also works as a high tack assembly lubricant when fitting shaft seals, O-rings, Schrader valves, ball valves, and unloaders. Apply a thin film to each surface before assembly.
The Nylog RT201B is available online from Sparky Direct, with Australia-wide delivery to any state or territory including regional areas. Sparky Direct is an Australian electrical wholesaler established in 2005, supplying more than 500,000 customers with transparent trade pricing.
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Electrical and HVAC products sold by Sparky Direct are intended for installation by licensed and appropriately qualified professionals in accordance with applicable Australian Standards and regulatory requirements. Customers are responsible for ensuring that any product purchased, including any related or associated components, is compatible and suitable for their intended installation and application.
Sparky Direct does not provide installation advice and does not assess product suitability for individual circumstances unless expressly confirmed in writing. Customers must confirm correct product selection, compatibility, compliance, and suitability with a licensed or appropriately qualified professional prior to purchase.
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