BUILT TO LAST
Designed for Australian conditions
Engineered to withstand the harshest climates and built to last with premium materials, this product is crafted with care for everyday Australian life.
01 / 4
Selleys Flame Flex Sealant 435g Grey Fire Acoustic Sealant High-Performance is a fire and acoustic-rated sealant designed for construction joints and gaps in bushfire-prone areas.
This high-performance sealant is suitable for both interior and exterior applications, effectively sealing gaps in walls, windows, and doors. It is compatible with various surfaces including concrete, brick, timber, plaster, cement sheeting, metals, and most plastics. Selleys FlameFlex can be applied to wet or damp surfaces without the need for a primer on most materials. Once fully cured, it is sandable and comes with a 10-year water-tight seal guarantee. This sealant meets BCA acoustic requirements and is ideal for use in external and internal control joints in fire-rated constructions.
| Dimensions (W x H x D) | 50mm x 230mm x 50mm |
| Weight | 0.435 kg |
| Material | Silyl Modified Polymer |
| Colour | Grey |
| Model Number | 100412 |
Selleys Flame Flex Sealant 435g Grey Fire Acoustic Sealant High-Performance is designed for effective sealing in various construction applications.
Specifications will vary by product. Please refer to the product description above or contact us before ordering if you need a specific measurement.
Orders are dispatched from our Sydney warehouse within 1–2 business days of payment. Delivery times from Sydney:
Tracking is provided on dispatch. Remote postcodes may incur additional fees.
We offer a 30-day change-of-mind return on select unopened products in original packaging (excluding health/safety items or bulk purchases). Email us within 30 days of delivery to start a return.
A restocking fee of 7–25% applies, plus return postage (unless approved otherwise). Customer-incurred postage costs are non-refundable without prior approval.
If your product arrives faulty or damaged, contact our support team with your order number and photos or a video of the fault. You don’t need the original packaging to make a faulty-item claim. Do not return items without a return authorisation.
12-month Australian warranty on this product unless noted otherwise. The warranty covers manufacturing defects under normal use. This warranty is in addition to your rights under the Australian Consumer Law, which cannot be excluded and may apply beyond this period.
The warranty does not cover:
To claim warranty: contact our support team with your order number, photos/videos of the fault, and a brief description. We will assess the claim and offer a replacement, repair, or refund as appropriate.
Complete the set
Hand-picked add-ons from the same category — save when you bundle.
A registered Australian business with real local support, transparent pricing, and fair returns.