DOWNLOAD THE APP
Customer Services
Copyright © 2025 Desertcart Holdings Limited
DOWNLOAD THE APP
💧 Lock in your flow, lose the leaks!
The Draper 33321 D542 Hydraulic Seal is a blue, high-performance sealing compound designed for metal threaded fittings in hydraulic systems. It cures to form a durable, high-pressure seal ideal for valves, couplings, and adaptors, ensuring leak-free operation across low to high-pressure lines. Lightweight and easy to apply, it’s a trusted choice with a 4.9-star rating for professional and DIY use.
| ASIN | B00HNV1KVM |
| Best Sellers Rank | 100,331 in DIY & Tools ( See Top 100 in DIY & Tools ) 1,193 in Sealers |
| Brand | Draper |
| Customer Reviews | 4.9 4.9 out of 5 stars (50) |
| Date First Available | 3 Jan. 2014 |
| Item Weight | 110 g |
| Item model number | 33321 |
| Manufacturer | Draper |
| Manufacturer part number | 33321 |
| Model | 33321 |
| Product Dimensions | 23 x 4 x 12.1 cm; 110 g |
D**W
Easy to use.
Easy to use, works well
D**Y
It actually works!
Bought to do the air compressor regulator, one of those chinese air compressors. The are not to be done up with a spanner but with this stuff, basically wierd glue! But-- it absolutely does work - no leaks - tight as a ducks bottom... To my surprise!
P**B
Only stuff that sealed my PCP 300bar foster fittings
Draper 33321 D542 Hydraulic Seal was the only stuff that sealed my PCP 300bar foster fittings and pressure gauge
C**S
Better that PTFE tape?
Used to fit compressor fittings, air guns and other air tools. Not a leak for a single one after using this product. It's good stuff
S**7
Draper Hydraulic Seal Fluid (reddish brown colour)
The hydraulic version IS reddish brown . Impressed with large bottle size. Love the pull up push down cap to open and close. Runs round thread just nice - not too runny and not too thick. Used on hydraulic pump hose connection when installing Raymarine Evolution one autopilot to a boat. Not a weeping joint anywhere so I’m very impressed with Draper’s hydraulic seal fluid. Recommended.
R**K
Works really well 😁
Used for sealing high pressure side of power steering pump on a Ford Fiesta. It was easy to apply and sealed first time. These are notorious for not sealing but this did the trick. Highly recommended.
R**N
Works Wonders
Looking at the reviews that made me decide to purchase this Item. I was searching for something special that actually works also not so expensive ? Then I found this, I have used it to seal the compressor components and connectors, similar to Colin. this was instead of using PTFE much easier and better with Draper. It also says hydraulic Seal "mentions in the review" if it copes with that it must be good. I can say it's brilliant, Would Definitely Recommend.
K**Y
It's not blue
Worked really well but I expected it to be blue. Its definitely brown.
Trustpilot
2 weeks ago
2 weeks ago