Asphalt Mixing Plant Shaft Sealing Element (High-Temp)
Asphalt Mixing Plant
Asphalt mixing plant sealing element - high-temp shaft seal that keeps hot bitumen, dust and moisture from reaching the pugmill bearings.
- ■Material: Heat-resistant sealing material
- ■Application: High-temp shaft sealing, bitumen/dust/moisture containment
■ ISO 9001:2015 Certified
■ Precision-Molded
■ Heat-Resistant, Leak-Tight Seal
■ Ships to 50+ Countries
[ Engineering Reference ]
Decisive Specifications
| Material | Heat-resistant sealing material |
|---|---|
| Hardness | Hot-service compression grade (not a cast wear face) |
| Process | Formed to shaft & housing dimensions |
| Application | High-temp shaft sealing, bitumen/dust/moisture containment |
| OEM Fit | Ammann, Marini, Benninghoven, MEKA, Astec, generic pugmill |
■ All values verified via CMM inspection · ISO 9001:2015
[ Grade Selection ]
Choosing the Right Grade
A wear seal is chosen for resilience and sealing, not cast hardness. Pick the grade by pressure, temperature and dust load:
Not sure which grade fits your plant? Send your aggregate type, output and plant model and we recommend the grade with your quote.
[ Available Grades / Variants ]
Available Grades & Variants
This part ships in several cast grades. Send your output, aggregate hardness and plant model and we match the grade — or cast to your exact OEM specification.
[ RFQ Prompt ]
Need a Specific Size or OEM Replacement?
Don't see your exact specs? Send us a blueprint, a worn sample, or just your machine model. Our team will review the details and provide a tailored quotation.
[ OEM Compatibility ]
Compatible Mixing Plant Brands
® Registered trademarks are property of their respective owners.
[ Technical Audit ]
Engineering Advantages
Holds Its Seal Through the Heat Cycle
Built from heat-resistant sealing materials, the element keeps hot bitumen and dust inside the chamber instead of hardening and cracking the way an ordinary seal does after a few production cycles.
Keeps Contaminants Off the Bearings
By sealing the shaft pass-through, the element stops hot mix, fine dust and moisture from reaching the bearing housing - the contamination path that turns a low-cost seal into a seized-bearing shutdown.
Formed to Shaft & Housing
Each element is dimensioned to your plant's shaft and housing so it seats correctly and holds its seal through the temperature cycle - send the plant model or a worn seal and we match the size and section.
The sealing element closes the gap where each mixing shaft passes through the pugmill end, working at sustained high temperature against hot bitumen, mineral dust and the moisture that flashes off the aggregate. It keeps that mix inside the chamber and away from the shaft bearings.
Heat is what makes this seal a wear part: an under-spec element hardens and cracks, and once it does, hot bitumen and fine dust track straight into the bearing housing. Contaminated bearings run hot, seize, and can stop a plant mid-batch - an emergency repair on a machine that has to keep hot mix moving to stay on grade.
Sureay sealing elements are built from heat-resistant sealing materials and dimensioned to the shaft and housing of the listed plants, so they seat correctly and hold their seal through the temperature cycle. They suit pugmill and twin-shaft plants from Ammann, Marini, Benninghoven, MEKA and Astec, and are best renewed whenever the shaft is opened for blade or arm work.
[ How to Order ]
Made to fit your plant — from a sample or a model
Every part is cast to order. There is no catalogue number to look up — we reverse-engineer the fit from your worn part or plant model, so you get an exact replacement rather than a near-miss.
Send your part or model
Email a photo of the worn part, its key dimensions, or your plant make and model. If you can ship the worn part it becomes the master pattern for an exact copy.
We measure & match
Our team reverse-engineers the geometry, bolt pattern and profile, and recommends the grade for your aggregate, output and temperature.
Confirm the quote
You approve dimensions, grade, price, MOQ and lead time before anything is cast — no surprises.
Cast, inspect & ship
We cast on our lost-foam / DISA lines, run a dimensional and hardness check, and ship factory-direct to 50+ countries. A material and hardness report can travel with the order.
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[ Knowledge Base ]
Product FAQs & Buying Guidance
Technical FAQs
01Why do asphalt plant shaft seals need to be heat-resistant?+−
They work at sustained mixing temperature against hot bitumen and dust. An ordinary seal hardens and cracks in that heat, then lets contaminants into the bearings. A heat-resistant sealing element holds its seal through the temperature cycle, which is why it lasts where a standard seal fails.
02How often should asphalt mixer sealing elements be changed?+−
Renew them whenever the shaft is opened for blade or arm service, and immediately if you see bitumen weeping at the shaft ends or dust in the bearing grease. Catching a tired seal early is far cheaper than replacing the bearings it protects.
03Which asphalt mixing plants do your sealing elements fit?+−
Sealing elements are dimensioned to the shaft and housing of pugmill and twin-shaft plants from Ammann, Marini, Benninghoven, MEKA and Astec, plus generic pugmills. Send your plant model or the worn seal and we match the size and section.
04What material is an asphalt shaft sealing element made of?+−
The element is built from heat-resistant sealing materials chosen to hold their seal at sustained mixing temperature, where an ordinary seal would harden and crack and let hot bitumen and dust into the bearings.
05Can you supply asphalt sealing elements from a sample?+−
Yes. Send a worn element or the shaft and housing dimensions and we supply a matching replacement. Renewing the seal whenever the shaft is opened for blade or arm work is far cheaper than replacing the bearings it protects.
06How do I stop bitumen leaking at the asphalt mixer shaft?+−
Bitumen weeping at the shaft ends means the sealing element has hardened or cracked in the heat. Replacing it restores the seal and keeps hot mix, dust and moisture out of the bearing housing - contaminated bearings run hot and can stop the plant mid-batch.
Why Choose Sureay
01Is Sureay a direct manufacturer or a trading company?+−
We are a direct factory. Most mixer wear parts are cast and machined in-house on our lost-foam and DISA green-sand lines, while sealing components are precision-molded - either way you deal with the people who actually make the parts and skip the trading-company markup.
02Can you supply parts to fit a specific OEM mixer model?+−
Yes. Send the plant make and model, or a photo and key dimensions of the worn part, and we match the casting and bolt pattern. We supply OEM-fit replacement wear parts for the major concrete and asphalt plant brands and welcome OEM/ODM work.
03Are you ISO certified and do you ship internationally?+−
Sureay is ISO 9001:2015 certified and ships factory-direct to over 50 countries. Each order can include a material and hardness report on request.
Reach Our Team
Get in Touch with Our Engineers
Contact Our Team
Discuss your requirements directly with our engineers.
Request a Quote
Our engineering team responds within 24 hours.
Sureay manufactures replacement wear parts to fit the listed OEM machines and is not affiliated with these manufacturers. All brand names and trademarks are the property of their respective owners.