Sponge Rubber Extrusion Strip – Product Introduction

Sponge Rubber Extrusion Strips are lightweight, flexible sealing materials made from EPDM, Silicone, NBR, or other elastomers with a closed-cell or semi-closed-cell structure. These strips provide excellent compression, weather resistance, and long-lasting sealing performance. They are widely used in doors, windows, automotive systems, electrical cabinets, and various industrial sealing applications.

At Jinjiang Yunli Technology Co., Ltd., we produce high-quality sponge rubber strips using premium virgin raw materials, ensuring consistent density, elasticity, and durability across all product grades.

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Key Features

Soft, compressible structure with excellent rebound

Superior sealing for air, water, dust, and noise

Excellent resistance to ozone, UV, and weather aging

Lightweight, flexible, and easy to install

Available in various shapes: D-type, P-type, E-type, rectangular, round, and custom profiles

Non-conductive, environmentally friendly, and odor-free

Typical Physical Properties (Sponge EPDM / Sponge Rubber Grade)

Property	Typical Value
Hardness (Shore C)	15–35 (customizable)
Density	0.35–0.80 g/cm³
Compression Set (25%)	≤ 25%
Compression Deflection (25%)	40–100 kPa
Tensile Strength	≥ 1.5–3.0 MPa
Elongation at Break	≥ 150%–250%
Water Absorption	Very low (closed-cell structure)
Operating Temperature	–40°C to +120°C (EPDM grade)
Weather / Ozone Resistance	Excellent
Thermal Insulation Performance	Good, thanks to closed-cell structure

Note: Properties can be customized based on material type (EPDM, Silicone, NBR) or customer requirements.

Applications

Sponge Rubber Extrusion Strips are widely used for sealing, cushioning, damping, and insulation in many industries:

1. Door & Window Sealing

Air-tight and water-tight sealing

Noise reduction and energy efficiency

Prevents dust infiltration

2. Automotive Applications

Car doors, trunks, sunroofs, and engine compartments

Vibration damping and sound insulation

Weather and temperature sealing for exterior components

3. Electrical & Industrial Equipment

Electrical cabinet sealing

Machinery doors and panels

Shock absorption and vibration control

4. HVAC & Refrigeration

Duct sealing and insulation

Prevents moisture leakage

Thermal insulation for temperature-sensitive environments

5. Marine & Construction

Sealing for boats, containers, and building joints

Anti-vibration and waterproofing

Why Choose Jinjiang Yunli Technology's Sponge Rubber Extrusion Strips?

20+ years of manufacturing expertise

100% virgin raw materials-no recycled content

Stable density and consistent foam structure

Advanced extrusion and continuous vulcanization technology

Custom profiles, hardness, and colors available

Reliable quality control and fast delivery

 

FAQ

Q1: Are you trading company or manufacturer?
A: We are manufacturer.

 

Q2: What's your MOQ?
A: Normally it's 500 meters for one size and one color.

Q3: What's your output?
A:500,000 meters per week

Q4: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. And for mass production it takes 15-20 days.

Q5: May I have samples ? is it free or extra?
A: Yes, we are happy to explore new product with our customers. If the sample need to be customized, please contact us. For the regular item, we supply 3-5meters samples for free. And customer pay the sample freight only.

Q6: Whether to support customized services?
A:We can customize according to drawings or samples,Production mold independent research and development manufacturing, independent transformation of production equipment.

Q7: What is your terms of delivery?
A:EXW.FOB.CFR.CIF,DDU.etc.

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