The TSS-160-DFCON is a 160mm Duct-to-Fitting connector for the Verplas Rapid Self-Seal Thermal Ducting system. It provides an airtight, push–click–lock joint between a cut or male-ended thermal duct section and a female-socketed fitting — such as a bend, T-piece, or transition piece. This slim coupling maintains the system's DW/143 Class A airtightness at the joint without tape, sealant, or tools, and is the correct connector to use when a duct length has been field-cut and its integral connector removed.
Duct-to-Fitting
Connection Type
DW/143 Class A
Airtightness
Self-Seal
Push–Click–Lock
When to Use DFCON vs DDCON: Use the TSS-160-DFCON (Duct to Fitting) when joining a duct end to a fitting socket (bend, T-piece, etc.). Use the TSS-160-DDCON (Duct to Duct) when joining two plain duct lengths together. Using the correct connector maintains system airtightness.
Key Features
Duct-to-Fitting Interface
Specifically designed to join a duct section's male end to a female fitting socket — ensuring the correct sealing geometry is maintained at each joint type.
Airtight Self-Seal Technology
The push–click–lock mechanism creates a factory-guaranteed, airtight connection exceeding DW/143 Class A criteria — no tape, sealant, or clamps required.
Essential After Field Cutting
When a duct length is cut on-site, the integral connector is lost. The TSS-160-DFCON restores a proper sealed connection at the cut end, maintaining system integrity.
Lightweight & Non-Intrusive
The slim connector profile adds minimal bulk to the joint, keeping the run compact in tight ceiling and loft voids.
System-Wide Compatibility
Designed to work with all TSS-160 series fittings — bends, T-pieces, adaptors, and the DDCON duct-to-duct connector — as part of the complete Verplas thermal system.
Eliminates Taped Joints
Replacing site tape with a certified Self-Seal connector removes the most common source of airtightness failure in domestic ventilation duct installations.
Specifications
| SKU |
TSS-160-DFCON |
| Diameter |
160 mm |
| Connection Type |
Duct to Fitting |
| Material |
Thermoplastic with elastomeric sealing gasket |
| Colour |
Grey |
| Airtightness |
Exceeds DW/143 Class A |
| Operating Temperature Range |
−15°C to +60°C |
| System |
Verplas 160mm Rapid Self-Seal Thermal Ducting |
| Tools Required |
None |
Frequently Asked Questions
What is the difference between the DFCON and DDCON?
The DFCON (Duct to Fitting) joins a duct male end to a fitting female socket — the geometry is designed for this specific interface. The DDCON (Duct to Duct) joins two duct lengths. Using the wrong connector can compromise airtightness.
Do I need to use this connector every time I connect to a fitting?
Not necessarily. Each TSS-160 duct length comes with an integral connector, so straight connections from duct to fitting use this built-in connector. The DFCON is needed when the integral connector has been removed by field cutting, or when a separate connector is required for system design reasons.
Is the DFCON supplied with each duct length or fitting?
No — it is sold separately for use as needed. Duct lengths include their own integral connectors, and most fittings include their required sockets. The DFCON is a supplementary connector for cut sections and custom installations.
Can I use the DFCON to repair a damaged joint?
Yes. If a joint has been incorrectly assembled or damaged, the TSS-160-DFCON can be used to re-establish a proper airtight connection at a duct-to-fitting interface.
Does the DFCON require any sealant?
No. The Self-Seal mechanism uses an integral thermoplastic elastomeric gasket that creates the airtight seal on push-fit — no additional sealant is required or recommended under normal installation conditions.
