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I'm Henry from HC. Let me guide you through the pages.
I am a co-founder of HC. I have been working with HC for 20 years now. Click the button below to find out how we can provide you with a great solution for sealing strips.
FREE CAD Design
All your customization needs.
- We can meet all your custom extrusion sealing needs
We have 5000+ molds. Precise control of size. Excellent researcher and CAD drawing skills. This makes our factory very flexible. That is precisely what sets us apart. Regardless of your industry, the complexity of your requirements, your material preferences, or the dimensions of your rubber parts？
Extruded Rubber Parts
We can custom extrude any shape, color, or material seal. Based on CAD drawings for all your customization needs.
Auto Seal
We can provide design
- flocked glass run channel
- Sponge Bulb Extrusion Seal with Metal Carrier
- edge guard trim seal
- Extruded glazing rubber gasket seal
- self-adhesive door seal, etc.
Bus/Truck seal
EPDM rubber is the first choice
- the price that is competitive
- decided by the performance of EPDM material
- Provide you with solutions for custom complex products.
- Customize all your challenging seals.
Container seal
Hot vulcanized corners
- available for container and refrigerated door sealing strips.
- Type: C type gasket, H type door gasket, J type door gasket
- A custom container door gasket is also available for your needs.
Marine seal
Rubber dock fenders extrusions
- EPDM rubber with good resistance to weather, UV, ozone, water, and chemicals…
- with the best quality rubber
- HC can according to the customer’s drawing to produce
Industrial Seal
We provide a wide range of seal strips
- extruded sealing strips
- sponge profiles
- dense extrusions
- flocking sealing strips
- glazing channels
- edge trim seals, etc
Fire Resistant Seal
A fire-resistant rubber seal strip——EN45545
- is a high-quality EPDM rubber seal strip
- has replaced existing rubber seal strips in a number of trains across the country
- This EPDM seal strip conforms to the new British standard EN 45545
Construction Seal
500+ construction related challenges have been successfully solved,
- extrusions are used directly as a construction material
- a wide range of custom-made installation tools can be developed to help lower installation and construction times, saving our clients a significant amount of time and money.
Electrical Cabinet Seal
They’re installed inside cabinet-like enclosures
- weatherproofing
- flame or chemical resistance
- EMI shielding
- They can also help engineers meet IP standards, NEMA rating, or UL 94 requirements
What Are You Looking For?
Whatever your product all shapes, sizes, and complexities meet your specific needs.
OUR CAPABILITIES
We use state-of-the-art machines. Has the following capabilities in rubber extrusion：
- Cutting
- Vulcanized Splice
- Adhesive Tape
- Miter Cuts
- Custom Compounding
- Dense and Sponge Materials
- Dual Durometer
- Microwave
- Autoclave
- Mandrel Cure
MATERIALS
Since inception.We can produce extruded seals from the following materials:
- Ethylene Propylene Diene Monomer（EPDM）
- Polyvinyl chloride (PVC)
- Silicone
- Neoprene(CR)
- SBR
- Thermoplastic Elastomer(TPE)
- Thermoplastic Vulcanizate(TPV)
- Thermoplastic Rubber(TR)
- Natural Rubber
- Solid and Sponge
Rubber extrusion
Things need to consider
The most significant procedure parameters are pressure of the head, speed of extrusion, and temperature. They are the best pointers of how well or how inadequately the extruder performs. Procedure issues, as a rule, are first turned out to be clear from the head pressure and temperature readings.
Rubber extrusion provides a variety of benefits not found in other manufacturing processes
A wider variety of available shapes
Cost-efficient production
Lightweight products with high flexibility
Limited production waste
Rubber Extrusion Process
The rubber extrusion process involves forcing a rubber compound or mixed elastomer under pressure through a die that has the shape of the end product. The process starts with feeding material into an extruder, where heat and pressure are applied to aid the material’s travel through the die. Depending upon the material used, the heat and pressure will expand the end product’s size.
Steam Curing
Steam curing is mainly used for smaller batches and when the material being used contains non-black compounds. Curing with steam rather than with chemical cures is advantageous because it is considered a safer way to vulcanize rubber. Through steam curing, materials have significant wear performance properties, especially when using bonding in future installations.
Continuous Curing
Continuous curing is used on larger quantities or larger physical sizes of products. This technique uses microwaves or salt bath processes to gradually cure the rubber. Continuous curing is a low-energy technique because only a small amount of energy is applied over time. This process also ensures greater consistency of the profile of the end product.
Cutting-To-Length
Cutting-to-length is used to cut material away to achieve the desired shape of the end product for close tolerances. Lathes, high-speed cutters, and rotating cutters are used on longer runs and larger physical sizes of products. Other cutters can be used on long continuous runs and guillotine cutters are used on long-length and larger cross-sections.
Splicing
Splicing is used as a more cost-effective way to produce an endless loop product with an extruded profile or other products with complex corners because it requires no expensive custom tooling or dies. The process starts by utilizing our other methods of production to make the components of the final product. These components are cured using one of our curing techniques and cut, if needed, for final assembly. Depending on the desired shape of the final product, the materials can be spliced using cold bonding or splice molding.
Hot Splicing / Vulcanizing
We use the hot splicing/vulcanizing process to facilitate a chemical connection between the ends of rubber extrusion, creating a full and connected seal that improves the strength of gaskets and enhances their resistance to weather and other environmental factors.
Rubber Lathe Cutting
The lathe cutting process involves extruding a tube of rubber, cutting it to a specified length, and sliding it onto a mandrel. The part is then ground at high speed on the outside diameter (OD) using a lathe. HC uses advanced grinding and lathing machinery to ensure that the OD of the tube matches the customer’s specified tolerances. Washers and gaskets requiring precision or high-precision tolerances are ideal for lathe cutting. Most rubber materials available today are compatible with the lathe cutting process. The benefits offered by lathe cutting include substantially reduced material waste, no tooling costs, improved sealing surface, and no hour glassing from die cuts.
These parameters relate just to the extruder
In any case, there are a lot more procedure parameters for the whole extrusion line and this, obviously, relies upon its particular segments.
Line speed
Dimensions of the extruded product
Line tension
Other significant extrusion procedure parameters are:
- Design of the die
- Proper land length
- Land length ratio
- Drawdown
- Screw speed
- Motor load
- Barrel temperatures
- Die temperatures
- Cooling rates
- Vacuum level invented extrusion
- Designing for sensitive materials
What You Should Know?
Two types of vulcanization method
The final product is produced; in the discontinuous vulcanization, the standard of the rubber sealing strip is that the finished product should be soft,
not too rigid, smooth, and smooth on the plane, and there should be no babble.
Discontinuous Vulcanization
- After cutting the extruded rubber strip to a certain length,
- Put into vulcanization tank to vulcanize
- Put the extruded rubber strip semi-finished product into the model to vulcanize
Continuous Vulcanization
- microwave continuous vulcanization
- Salt bath continuous vulcanization method
- hot air continuous vulcanization
Why Choose Us
REAL FACTORY
HC is a set design, production, sales in the integration of enterprises that have many years of experience in technology research and development
FAST DELIVERY
4 production lines work at the same time. No matter how many meters you customize. We can produce quickly and ship on time.
EXPERIENCED DESIGNERS AND ENGINEERS
We have been in the extrusion weatherstrip industry for 20 years. By thinking, designing, making, collaborating. Provide the perfect solution for your customized products.
STATE-OF-THE-ART MANUFACTURING
Benefit from our ultra-modern extrusion equipment to create the perfect profile for your application. We offer custom shapes, specialty rubber compounds, as well as secondary manufacturing and assembly services.
CERTIFICATES POSSESSED
We have ISO9001:2015 Quality Management System, EN45545-2 Flame retardant performance test report, DIN5510 Flame retardant performance test report, etc.
YOU CAN EARN HANDSOME PROFITS IN YOUR COUNTRY
Sourcing from the factory saves you money. We have helped customers in more than 30+ countries to be successful and earn good profits. We also welcome you to become an exclusive distributor in your country.
Our factory
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Some cool tips you should know
01.
What is the life expectancy of the rubber seal?
Product life is contingent upon many factors, including environment, cycles, pressure, etc. HC Rubber cannot predict seal life under all the varying conditions of operation. Accelerated life testing may be performed by the customer to determine expected life, but must be conducted in dynamic application.
02.
Can I return it if the sale is not good?
Can not. There is no way for the rubber seal to return to rubber. This is an irreversible result.
03.
How many employees do you have?
We're expanding fast. We currently have 100+ employees and 3,000-5,000 square meters of factory space ready to serve you.
04.
Payment methods you care about?
We accept T/T B/L or L/C at sight, West Union, VISA, Paypal is also accepted.
05.
What is the normal lead time for product orders?
Average lead times for prototype / first article are 1-2 weeks, if tooling is involved, lead time for production tooling is 10 days, and average production time after sample approval is 2-3 weeks.
06.
Could you please tell us the month capacity of your products ?
It depends on which model, we produce more than 3000+ tons of materials per month.
07.
Could you please tell us the month capacity of your products ?
We provide preproduction samples before mass production for all customers. We provide quality certs We accept third-party inspection.
