







J-B Weld Red Hi-Temp RTV 100% Silicone Gasket Maker & Sealant – 85g (3oz) Tube, 1-Hour Set, Heat Resistant Up to 343°C, With Nozzle
£9.99 Original price was: £9.99.£8.36Current price is: £8.36.
J-B Weld Red Hi-Temp RTV Silicone Gasket Maker & Sealant (85g) forms a durable, heat-resistant seal for high-temperature automotive and mechanical repairs. With a fast 1-hour set time and resistance up to 343°C, it’s ideal for exhaust, engines, and heavy-duty sealing jobs.
| Product Attributes | |
|---|---|
| Weight | 0.12kg |

J-B Weld Red Hi-Temp RTV 100% Silicone Gasket Maker & Sealant – 85g (3oz) Tube, 1-Hour Set, Heat Resistant Up to 343°C, With Nozzle
£9.99 Original price was: £9.99.£8.36Current price is: £8.36.
Brand
Description
J-B Weld Red Hi-Temp RTV Silicone Gasket Maker & Sealant (85g) is a high-temperature sealing solution designed to create strong, flexible, leak-proof gaskets in demanding environments. With a fast 1-hour set time and heat resistance up to 343°C, it’s perfect for automotive and mechanical repairs exposed to extreme heat.
Product Overview
This 100% RTV silicone formula cures into a tough, durable seal that resists cracking, shrinking, and vibration under high temperatures. The bright red compound is engineered for exhaust systems, engines, and high-heat components where standard sealants fail. The included nozzle allows precise application for clean, professional results in tight spaces.
Key Features
- Heat Resistant to 343°C: Designed for extreme temperature applications
- 1-Hour Set Time: Fast curing for quicker repairs
- 100% RTV Silicone: Flexible gasket that won’t crack or shrink
- Heavy-Duty Seal: Withstands vibration, pressure, and thermal stress
- Nozzle Included: Controlled bead application for accuracy
Specifications
- Brand: J-B Weld
- Type: Red Hi-Temp RTV Silicone Gasket Maker & Sealant
- Formula: 100% RTV Silicone
- Size: 85g (3oz) tube
- Set Time: 1 hour
- Heat Resistance: Up to 343°C
- Includes: Application nozzle
Ideal For
- High-temperature engine components
- Exhaust systems and manifolds
- Heavy-duty automotive sealing
Why Choose J-B Weld Red Hi-Temp RTV Silicone Gasket Maker & Sealant?
J-B Weld Red Hi-Temp RTV Silicone Gasket Maker & Sealant is built for extreme heat and demanding repairs. Trusted by mechanics and DIY users, it delivers a long-lasting, flexible seal that survives temperature spikes, vibration, and pressure. When standard sealants fail, this high-temp formula provides reliable professional-grade performance.
Shipping & Return
We hope that you are delighted with every purchase you make from Home Supplies Direct. However, if you are not entirely satisfied, our experienced team is here to help. Below are the details on how we can assist you:
Amending or Cancelling an Order
If you'd like to amend or cancel a recently placed order, please contact our Customer Service Team at 0208 998 0118.
- Amendments can be made up until the point of despatch.
- Once the order has been despatched, we cannot amend or cancel it, but we will be happy to assist you with returns if needed.
In-Store Collection
We offer a convenient in-store collection option:
- Monday to Friday: 9:00 AM – 5:00 PM
- Saturday: 9:00 AM – 2:00 PM
If you require collection outside of these hours, we may be able to arrange a special collection time. Please contact us in advance, and we will do our best to accommodate your request.
Heavy Parcel Charges
For orders over 2kg, additional shipping charges may apply depending on delivery region and total cart weight.
UK — Parcelforce 48 / Parcelforce 24
| Cart Weight | Parcelforce 48 | Parcelforce 24 |
|---|---|---|
| 2.01kg – 30kg | £6.99 | £7.99 |
| 30.01kg – 60kg | £13.98 | £15.98 |
| 60.01kg – 90kg | £20.97 | £23.97 |
| 90.01kg – 120kg | £27.96 | £31.96 |
| 120.01kg+ | £34.95 | £39.95 |
EU — Ireland & France Only (International Tracked Standard)
| Cart Weight | International Tracked Standard |
|---|---|
| 2.01kg – 30kg | £19.00 |
| 30.01kg – 60kg | £38.00 |
| 60.01kg – 90kg | £57.00 |
| 90.01kg – 120kg | £76.00 |
| 120.01kg+ | £95.00 |
EU — Excluding Ireland & France (International Tracked Standard)
| Cart Weight | International Tracked Standard |
|---|---|
| 2.01kg – 30kg | £49.00 |
| 30.01kg – 60kg | £98.00 |
| 60.01kg – 90kg | £147.00 |
| 90.01kg – 120kg | £196.00 |
| 120.01kg+ | £245.00 |
Rest of the World (International Parcel)
| Cart Weight | International Tracked Standard |
|---|---|
| 2.01kg – 30kg | £85.00 |
| 30.01kg – 60kg | £170.00 |
| 60.01kg – 90kg | £255.00 |
| 90.01kg – 120kg | £340.00 |
| 120.01kg+ | £425.00 |
Final shipping costs are calculated at checkout based on delivery address, selected shipping method, and total cart weight.
Damaged or Incorrect Items
Please check your parcel when it arrives. If you’ve received damaged goods, missing items, or incorrect products, we will resolve the issue quickly.
- Contact us within 30 days or 7 days for shortfalls of receiving the goods.
- The quickest way to reach us is by calling our Product Returns Team at 0208 998 0118.
- Alternatively, you can email us at sales@homesuppliesdirect.com.
- We will replace missing or damaged products at no extra charge.
Returning Unwanted Items
If the item you ordered turns out to be unsuitable, we are happy to offer a refund on unused products returned in original, resalable condition.
Before arranging a return, we recommend contacting our team — we may be able to help with product advice or offer a solution that saves you time and return costs.
- You have 30 days from receipt to notify us.
- Items must be unused, unopened, and in resalable condition.
- We will issue a full refund for the product once the item is returned and inspected.
- Please note: Postage/return shipping costs are non-refundable for unwanted items.
Large & Oversized Returns
Some items may exceed the size limits of standard postal services such as Royal Mail.
- In such cases, returns should be arranged via a suitable courier such as Parcelforce or a similar service.
- We recommend using a tracked and insured delivery service for your peace of mind.
If you need further assistance, feel free to reach out to our team. We are committed to making your shopping experience as smooth and hassle-free as possible.
Specs
| DIMENSIONS | |
|---|---|
| Weight | 0.12kg |
Product Safety

Danger
- Causes serious eye damage.
- Harmful to aquatic life with long lasting effects.





















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