What we can supply
Taokron can supply duct sealant and flange gasket tape to duct shops, with your machine order or as a separate shipment. Both are quoted per order quantity. We do not publish prices, because the right quote depends on the item, the size and how many you use.
We have no fixed product list for these two items, because every shop already has a sealant and a tape it likes. So the useful first step is to tell us what you run now. The sizes below are the flange and corner sizes our machines work with. For anything else, such as gasket width, thickness or colour, tell us the size and gauge you use and we will match the request.
| Item | Fits | What we need from you |
|---|
| Water-based duct sealant | Seams, joints and corners on sheet metal duct | Type, colour, packaging (cartridge, sausage or pail), quantity |
| Flange gasket tape for TDF | TDF flange, height 35 mm | Type, width, thickness, colour, roll length |
| Flange gasket tape for TDC | Ribbed (A) profile 20 / 25 / 30 / 35 / 40 mm; plain (B) profile 20 / 25 / 30 / 35 mm | Type, width, thickness, colour, roll length |
| Sealant and gasket for corner areas | TDF corners 25 / 30 / 35 mm; TDC corners 20 to 40 mm | The corner size and the sealant or tape you use now |
Why sealing is part of the shop's job
Much of a duct system's leakage is decided before the duct leaves the shop: how square the flange is, how well the corners seat, and what goes into the joints and seams. Sealant and gasket tape are the two consumables that do that work, so they are worth buying as carefully as the sheet.
Two sets of class letters run in opposite directions, and mixing them up is an easy mistake:
- SMACNA seal classes: Class C requires transverse joints to be sealed, Class B adds longitudinal seams, and Class A adds duct wall penetrations as well. Class A is the most sealed. Which seal class applies to which pressure class can differ between editions, so follow the edition named in your project specification.
- EN 1507 and EN 12237: the European airtightness classes for rectangular duct (EN 1507) and round duct (EN 12237) run from A to D. Here class A is the leakiest and class D the tightest.
Our guide to HVAC duct sealants and gaskets covers the material types and where each one is used, and duct air leakage classes explained covers the classes and how leakage is tested. For the joints themselves, see duct seam and joint types compared.
How it fits the machines you run
- TDF flange former: the TDF Flange Forming Machine rolls a 35 mm high flange on the duct end. The gasket tape sits on that flange face, so its width needs to suit the flange.
- TDC flange former: the TDC Flange Forming Machine comes in ribbed (A) profiles of 20 to 40 mm and plain (B) profiles of 20 to 35 mm. Tell us your profile and we match the tape to it.
- Corner machines: the Auto Corner Making Machine and the Pneumatic Corner Mounting machine (SBCC) deal with the corners, which is where gaps tend to open on a flanged joint. Sealant at the corners and gasket along the flange work as a pair.
- Lockformer: the seams formed on a Lockformer (SBLC series) are the longitudinal seams that Seal Class B and A require to be sealed.
Buying the consumables from the same supplier as the machines keeps the fit consistent from one order to the next. If you use our flange and corner machines, send us the flange profile and corner size and we work from those.
How ordering works
- With a machine order: add sealant and gasket tape to the same container. They top up space that would otherwise be empty, so the extra freight is very small.
- As a separate shipment: for repeat orders, whether or not you run our machines.
- One supplier: machines, corners, sealant and gasket tape in one conversation and one quote.
- Mixed orders are welcome: several items and sizes can go in one shipment.
- Quoted per order quantity: no published prices. We quote what you ask for.
To quote, we need:
- The items you want (sealant, gasket tape for TDF, gasket tape for TDC)
- The flange profile or corner size you run, from the sizes in the table above
- For gasket tape: type, width, thickness, colour and roll length. If you are not sure, tell us the size and gauge you use now or send a photo
- For sealant: type, colour and packaging (cartridge, sausage or pail)
- Roughly how many per month or per order
- Your destination port
What to check when sealant and gasket tape arrive
- The data sheet and listing: if your specification requires a listed sealant, such as UL 181, check the product carries it and read the listing on its data sheet.
- Frost damage: manufacturer data sheets for water-based duct sealant say not to let it freeze and give a storage range above freezing. Check pails and cartridges are intact and the sealant is smooth.
- Shelf life: data sheets state a shelf life for unopened containers, and it differs by product. Check the date and use older stock first.
- Gasket fit: the tape should match the flange it goes on in width, sit centred, and stick well to a clean, dry surface. Fit a test length on your own flange before you open a full case.
- Consistency: roll length, width and colour should match across a delivery and across reorders. Tell us if they do not.
Working with Taokron
- Machines built since 1994 and supplied to 100+ countries, with 60+ patents, from an ISO 9001:2015 factory
- Machines are CE marked with a Declaration of Conformity
- Australian office at Box Hill North, VIC
- Replies within 12 hours by email at [email protected] or on WhatsApp at +61 435 074 994
Request a consumables quote →
FAQ
Can Taokron supply duct sealant and flange gasket tape with a machine order?
Yes. We can supply sealant and flange gasket tape with your machine order, or as a separate shipment. When it goes with a machine order it can top up the same container, so the extra freight is very small. Mixed orders are welcome, for example sealant, gasket tape and corners in one quote.
What do I need to send for a quote?
Tell us which items you want, the type, width, thickness and colour of gasket tape you use, the sealant packaging you prefer (cartridge, sausage or pail), and roughly how many you need per month or per order. Add the flange profile or corner size you run and your destination port. Photos of what you use now help us match it. We quote per order quantity and reply within 12 hours.
Which flange sizes does the gasket tape go with?
Gasket tape is used on the flange faces of TDF and TDC joints. The TDF flange formed on our machines is 35 mm high. TDC flange profiles are 20, 25, 30, 35 and 40 mm in the ribbed (A) series and 20, 25, 30 and 35 mm in the plain (B) series. For gasket width and thickness, tell us the size you use now.
Which seal class or airtightness class do I need?
The project specification decides. SMACNA seal classes run from C to A, and A is the most sealed: Class C seals transverse joints, Class B adds longitudinal seams, and Class A adds duct wall penetrations. The European classes in EN 1507 for rectangular duct and EN 12237 for round duct run from A to D, and there class A is the leakiest and D the tightest. The letters run in opposite directions, so read the specification carefully. Our guides on sealants and on leakage classes explain both.
Can water-based sealant freeze in shipping?
It can be damaged by freezing. Manufacturer data sheets for water-based duct sealant tell users not to let it freeze, and to store it above freezing. Tell us the destination and the time of year when you order so the shipment can be planned around it, and check the data sheet of the product you buy for its storage limits and shelf life.
How are consumables priced?
We do not publish prices because they depend on what you order and how many. Send the items, sizes and quantity per month or per order and we quote that quantity. Top-up orders alongside a machine and repeat orders from shops that already run our machines are both possible.
