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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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Rubber Compound Products

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Colored and black compound rubber

 02

EPDM adhesive strips

 03

D-profile single-extrusion sponge sealing strip

 04

Single-extruded sponge rubber strip

 05

Car windshield weatherstrip

 06

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 < Dual-compound EPDM sealing strip
Dual-compound EPDM sealing strip
Supportiveness
Compression resilience
Seam sealing
Manufactured via co-extrusion of dense EPDM and sponge EPDM, this product combines the structural support of dense rubber with the compressibility and resilience of sponge rubber. It is primarily used for sealing automotive doors, windows, trunks, engine hoods, and bodywork seams.
Key Advantages:

Composite of dense rubber and sponge rubber; stable structure
Excellent compression resilience; long-lasting seal
Waterproof, dustproof, sound-insulating, and shock-absorbing
Resistant to ozone, UV radiation, and temperature extremes
Aging-resistant with a long service life
Customizable cross-section, hardness, and length based on drawings

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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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