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Colored and black compound rubber EPDM adhesive strips D-profile single-extrusion sponge sealing strip Single-extruded sponge rubber strip Car windshield weatherstrip Custom-profile EPDM rubber sealing strips Dual-compound EPDM sealing strip Automotive EPDM tri-component weatherstrips Solid EPDM rubber sealing strip
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Colored and black compound rubber

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EPDM adhesive strips

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D-profile single-extrusion sponge sealing strip

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Single-extruded sponge rubber strip

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Car windshield weatherstrip

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Custom-profile EPDM rubber sealing strips

 07

Dual-compound EPDM sealing strip

 08

Automotive EPDM tri-component weatherstrips

 09

Solid EPDM rubber sealing strip
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Home < Product Center < D-profile single-extrusion sponge sealing strip
D-profile single-extrusion sponge sealing strip
dust-proof
water proof
damping
This product is manufactured using high-performance EPDM rubber sponge material via a continuous extrusion process, resulting in a hollow D-shaped cross-section. Flexible and lightweight with excellent compression and recovery properties, it effectively fills assembly gaps between automotive components to ensure a stable, reliable seal. Widely used for vehicle doors, trunks, engine hoods, sunroofs, and bodywork, it provides waterproofing, dustproofing, sound insulation, vibration damping, and cushioning, thereby effectively enhancing overall vehicle comfort and sealing performance.
Key Advantages:

Uniform Molding: Produced via a single-extrusion process ensuring a consistent cross-section, suitable for high-volume, continuous supply.
High Resilience: The hollow sponge structure compresses easily, allowing it to compensate for assembly gaps over the long term.
Excellent Sealing: Effectively blocks rain, dust, and noise from entering the vehicle interior.
Shock Absorption & Noise Reduction: Dampens the impact of closing doors and minimizes unwanted noises.
Weather & Aging Resistance: EPDM material resists ozone and UV radiation, making it suitable for diverse outdoor environments.
Easy Installation: Lightweight and flexible; simple to cut and install.
Cost-Effective: Features a simple structure and high production efficiency, balancing cost with delivery timelines.

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Applications

Automotive: Door/window seals, trunk seals, engine hood seals.

Construction: Curtain wall joints, window seals, roofing membranes.

Rail Transit: Train door and window seals.

Appliances: Refrigerator and washing machine door seals.

Standard Product Property List
No.
Product Name / Test Item
5040
6533
7021
7527
8023
9040
1
Hardness IRHD
47
66
72
76
81
89
2
Tensile Strength (Min) MPa
13
10.8
7.3
7.3
8.2
13
3
Elongation at Break (Min) %
500
380
351
355
260
302
4
Hot Air Aging
70°C x 7d
Hardness Change (Max) IRHD
+4
+4
+3
+3
+4
0
Tensile Strength Change Rate (Max) %
-10
-18
-11
-10
-23
-16
Elongation Change Rate (Max) %
-21
-33
-27
-30
-35
-23
5
Compression Set Type B (Max)
(70°C, 24h) %
17
23
18
19
36
18
Production Flow
01
Auxiliary Equipment: Auto-weighing
02
Internal Mixer: Auto-mixing and Discharge
03
Open Mill: Cooling and Secondary Mixing
04
Rubber Strainer: Filtering Micro-impurities
05
Open Mill: Sheet Production
06
Batch-off Line
07
Testing
08
Warehousing
09
Packaging & Shipping
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