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Technical Specifications & Engineering Details of Round Shaped EPDM Sponge Cord

RUBBER-KU Round Shaped EPDM Sponge Cord – Advanced Industrial Technical Rubber Solution

RUBBER-KU RUBBER PRODUCTS manufactures high-performance Round Shaped EPDM Sponge Cord engineered with advanced industrial rubber technology for demanding sealing, insulation, cushioning, and vibration control applications. As The Best Moulded Round Shaped EPDM Sponge Cord supplier in Malaysia, RUBBER-KU focuses on delivering technically superior sponge rubber products with exceptional durability, dimensional consistency, environmental resistance, and compression performance.

Recognized as:

• The Largest Moulded Round Shaped EPDM Sponge Cord Manufacturer Malaysia
• The Highest Quality Moulded Round Shaped EPDM Sponge Cord manufacturer
• Market Leader of Moulded Round Shaped EPDM Sponge Cord
• The Biggest Moulded Round Shaped EPDM Sponge Cord in Malaysia
• The Widest Range of Moulded Round Shaped EPDM Sponge Cord supplier

RUBBER-KU supplies industrial-grade EPDM sponge cords designed to meet the technical requirements of:

• Automotive engineering
• HVAC systems
• Construction sealing
• Electrical enclosures
• Marine industries
• Industrial machinery
• OEM manufacturing
• Infrastructure applications

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Technical Material Composition

Base Polymer: EPDM Synthetic Rubber

Round Shaped EPDM Sponge Cord is manufactured using high-grade Ethylene Propylene Diene Monomer (EPDM) synthetic elastomer.

EPDM Material Characteristics:

• Excellent weather resistance
• Outstanding ozone resistance
• Superior UV stability
• Excellent oxidation resistance
• Strong thermal stability
• Excellent steam resistance
• Good flexibility
• Excellent aging resistance

The EPDM molecular structure contains saturated polymer backbones which significantly improve environmental resistance and outdoor durability.

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Closed-Cell Sponge Technical Structure

Advanced Closed-Cell Foam Engineering

RUBBER-KU EPDM sponge cords utilize precision closed-cell sponge manufacturing technology.

Technical Closed-Cell Features:

• Independently sealed internal air cells
• Minimal water absorption
• Airtight sealing structure
• Low permeability
• Enhanced insulation capability
• Improved compression recovery

Technical Advantages:

• Prevents moisture migration
• Reduces air leakage
• Improves thermal efficiency
• Enhances waterproof performance
• Increases long-term durability

Compared to open-cell sponge materials, closed-cell EPDM sponge provides:

• Better structural integrity
• Higher sealing efficiency
• Improved weather resistance
• Lower fluid absorption

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Technical Size Specifications

Standard Diameter Range

RUBBER-KU manufactures Round Shaped EPDM Sponge Cord in standard industrial diameters:

Diameter	Tolerance Application
3mm	Precision sealing
4mm	Electronics & enclosure sealing
5mm	Automotive sealing
6mm	Industrial cabinet sealing
8mm	HVAC systems
10mm	Machinery cushioning
12mm	Construction sealing
16mm	Heavy industrial applications

Custom Manufacturing Options:

• Special diameter production
• Custom density engineering
• Tailor-made hardness
• Continuous coil lengths
• Precision cut-to-length production
• Custom sponge profiles

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Technical Hardness Specifications

Shore A Hardness Range

Typical hardness range:

• 10 Shore A to 30 Shore A

Technical Hardness Benefits:

• Excellent compressibility
• Improved sealing adaptability
• Enhanced vibration absorption
• Better cushioning performance
• Reliable compression sealing

Soft hardness characteristics allow:

• Lower compression force
• Better surface conformity
• Improved gasket performance
• Reduced installation stress

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Technical Density Characteristics

Medium & Low Density Sponge Structure

The sponge density is carefully engineered to balance:

• Compression strength
• Flexibility
• Cushioning performance
• Weight reduction
• Insulation capability

Density Advantages:

• Lightweight structure
• Excellent compression behavior
• Enhanced thermal insulation
• Better shock absorption
• Improved acoustic dampening

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Technical Compression Set Resistance

Superior Compression Recovery Engineering

Compression set resistance measures the material’s ability to recover after prolonged compression.

Technical Performance:

• Excellent elastic recovery
• Long-term sealing retention
• Stable gasket pressure
• Reduced permanent deformation

Technical Benefits:

• Longer gasket lifespan
• Reduced leakage risk
• Improved sealing reliability
• Lower maintenance frequency

This property is critical for:

• Door seals
• Window gaskets
• HVAC enclosures
• Electrical cabinets
• Industrial machinery covers

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Technical Temperature Resistance

Industrial Thermal Stability

Operating Temperature Range:

• Minimum: -40°C
• Maximum: +120°C

Technical Thermal Properties:

• Maintains flexibility under low temperatures
• Retains elasticity at elevated temperatures
• Stable compression recovery
• Excellent heat aging resistance

Suitable Technical Environments:

• Outdoor installations
• HVAC systems
• Industrial machinery
• Steam environments
• Tropical climates

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Technical Weather Resistance

Advanced Environmental Stability

EPDM is one of the most weather-resistant synthetic elastomers available.

Technical Resistance Properties:

• UV radiation resistance
• Ozone resistance
• Oxidation resistance
• Humidity resistance
• Rainwater resistance
• Steam resistance

Technical Benefits:

• Prevents surface cracking
• Reduces hardening
• Improves outdoor lifespan
• Maintains flexibility
• Prevents premature deterioration

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Technical Water Absorption Properties

Low Water Absorption Performance

Closed-cell EPDM sponge rubber has extremely low water absorption characteristics.

Technical Advantages:

• Maintains dimensional stability
• Prevents moisture retention
• Improves waterproof sealing
• Enhances outdoor durability

This property is important for:

• Marine applications
• Outdoor construction
• HVAC insulation
• Waterproof gasket systems

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Technical Thermal Insulation Properties

Heat Transfer Reduction Capability

The internal closed-cell air structure minimizes heat transfer.

Technical Thermal Features:

• Low thermal conductivity
• Improved insulation efficiency
• Reduced energy loss
• Enhanced HVAC performance

Technical Applications:

• Air conditioning systems
• Refrigeration insulation
• Thermal sealing systems
• Construction insulation

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Technical Acoustic Insulation Properties

Noise Reduction Engineering

The sponge structure absorbs sound vibration and reduces acoustic transmission.

Technical Acoustic Benefits:

• Reduces airborne noise
• Minimizes vibration noise
• Improves acoustic comfort
• Dampens operational sound

Technical Applications:

• Machinery insulation
• HVAC systems
• Automotive cabins
• Building acoustics

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Technical Vibration Dampening Properties

Mechanical Shock Absorption Capability

The compressible sponge structure effectively absorbs:

• Mechanical vibration
• Equipment shock
• Impact energy
• Structural movement

Technical Advantages:

• Reduces machinery stress
• Improves equipment stability
• Extends machine lifespan
• Enhances operational comfort

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Technical Flexibility Characteristics

High Elasticity Engineering

RUBBER-KU EPDM sponge cords maintain excellent flexibility under:

• Repeated compression
• Dynamic movement
• Temperature cycling
• Outdoor exposure

Technical Flexibility Benefits:

• Easier installation
• Improved surface conformity
• Better sealing efficiency
• Reduced material fatigue

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Technical Chemical Resistance

Excellent Resistance Against:

• Water
• Steam
• Ozone
• UV exposure
• Mild acids
• Mild alkalis
• Weather exposure

NOT Recommended For:

• Petroleum oils
• Diesel fuel
• Gasoline
• Hydrocarbon solvents
• Petroleum lubricants

For oil-resistant environments, materials such as:

• NBR sponge rubber
• Neoprene sponge rubber
• Viton sponge rubber

may be more suitable.

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Technical Surface Finish Quality

Precision Extrusion Surface Engineering

RUBBER-KU utilizes precision extrusion technology to produce:

• Smooth surface finishing
• Uniform diameter consistency
• Stable profile geometry
• Excellent dimensional accuracy

Technical Surface Advantages:

• Improved gasket contact
• Better sealing efficiency
• Easier installation
• Reduced friction

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Technical Manufacturing Process

Step 1 – EPDM Polymer Selection

Premium-grade EPDM polymers selected for:

• Environmental resistance
• Compression stability
• Thermal durability

Step 2 – Precision Rubber Compounding

Advanced mixing systems ensure:

• Uniform cell distribution
• Stable hardness
• Consistent density

Step 3 – Sponge Extrusion Technology

High-precision extrusion produces:

• Accurate round profiles
• Smooth surface quality
• Stable dimensions

Step 4 – Controlled Vulcanization

Optimized curing process improves:

• Mechanical durability
• Heat resistance
• Compression recovery

Step 5 – Technical Quality Inspection

Each batch tested for:

• Diameter tolerance
• Density consistency
• Compression performance
• Flexibility
• Surface finish quality

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Technical Industrial Applications

Automotive Engineering

• Weather seals
• Door gaskets
• Noise insulation

HVAC Systems

• Duct sealing
• Thermal insulation
• Air leakage prevention

Construction Engineering

• Expansion joints
• Curtain wall systems
• Waterproof sealing

Electrical Systems

• Waterproof cabinets
• Dust-proof enclosures
• Cushioning protection

Industrial Machinery

• Shock absorption
• Vibration isolation
• Industrial gasket systems

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Technical Advantages Summary

Key Technical Features:

• Closed-cell waterproof sponge structure
• Excellent UV resistance
• Superior ozone resistance
• Outstanding compression recovery
• Excellent thermal insulation
• Superior vibration absorption
• Excellent acoustic dampening
• Low water absorption
• High flexibility
• Long-term durability
• Excellent outdoor weather resistance
• Wide operating temperature range
• Precision dimensional accuracy

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Why Engineers Choose RUBBER-KU EPDM Sponge Cord

RUBBER-KU RUBBER PRODUCTS is trusted for:

• Industrial-grade manufacturing quality
• Precision sponge extrusion technology
• Reliable technical performance
• OEM customization capability
• Consistent product durability
• Competitive factory pricing
• Fast industrial supply support

Our Round Shaped EPDM Sponge Cord delivers technically superior sealing performance for demanding industrial applications throughout Malaysia and international export markets.

RUBBER-KU RUBBER PRODUCTS — Malaysia’s trusted EPDM Sponge Rubber Engineering Specialist & Industrial Sealing Manufacturer.

EPDM Sponge Cord Manufacturer | EPDM Foam Cord Malaysia | Industrial EPDM Sponge Cord | Waterproof EPDM Sponge Cord | EPDM Sealing Cord

Supplier	:	RUBBER-KU RUBBER PRODUCTS
Email	:	rubberku@gmail.com
Phone	:	+603 5191 7961
Fax	:	+603 5191 5961
Location	:	Selangor, Malaysia

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