K11 TapaFugas: HVAC-R micro-leak sealant with integrated UV leak detection

K11 TapaFugas seals refrigerant micro-leaks and marks them with UV fluorescence in a single injection, with the system running and no evacuation. Polymer-free and tested per ASHRAE Standard 97. Used for 12+ years by HVAC manufacturers and contractors in Latin America, now imported to the US by Wylco LLC in Miami, Florida.

K11 product line

• K11 TapaFugas 2-in-1 — micro-leak sealant with integrated UV tracer. One injection, no evacuation. Doses from 10 to 60 ml.
• K11 Revela Fugas — high-fluorescence UV leak detection dye, compatible with mineral, POE and PAG oils.
• K11 Sella Plus — sealant and lubricant for flanges, threads, gaskets and O-rings. Stays flexible, never hardens. 35 ml applicator (code SPK11).
• K11 adapters — anti-backflow injection adapters for 1/4" and 5/16" service ports.

Frequently asked questions

What is K11 TapaFugas?

K11 TapaFugas is a 2-in-1 HVAC-R product: a polymer-free micro-leak sealant with an integrated UV fluorescent tracer. One injection seals micro-leaks and marks the leak point so it can be confirmed with a 365 nm UV lamp.

How is K11 different from a sealant-only or UV dye-only product?

Sealant-only products do not show where the leak was, and UV dyes only locate leaks. K11 TapaFugas does both in a single injection, so the technician seals and verifies in one visit.

Which refrigerants and oils is K11 compatible with?

Common HFC, HFO and natural refrigerants including R-22, R-410A, R-32, R-134a, R-404A, R-290, R-600a, R-1234yf and A2L replacements, and POE, PVE, PAG, mineral and alkylbenzene oils. Not for ammonia (R-717) systems.

Does K11 require system evacuation?

No. K11 is injected through the low-pressure service port while the system is running, using the K11 anti-backflow adapter.

What size leaks does K11 seal?

K11 is designed for micro-leaks: systems that take more than 30 days to lose their charge. Larger leaks should be repaired mechanically.

Is K11 safe for compressors and expansion valves?

K11 is polymer-free and tested per ASHRAE Standard 97 for chemical stability. It stays inert in the circuit and activates only at leak points on contact with air and moisture. Always follow the equipment manufacturer's service and warranty guidelines.

Where can I buy K11 in the US?

K11 is imported and distributed in the United States by Wylco LLC, based in Miami, Florida. Wholesale and distributor pricing is available on request.