Closed Cell Silicone Sponge Auto Rubber Seals

Closed Cell Silicone Sponge Auto Rubber seals or Closed Cell Silicone Sponge square cord or silicone foam sealing strip and silicone foam sealing belt are all made of 100% fumed silica collagen material added to the foaming
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Product Details

Closed Cell Silicone Sponge Auto Rubber seals 

1、Product Introduction 

Closed Cell Silicone Sponge Auto Rubber seals or Closed Cell Silicone Sponge square cord or silicone foam sealing strip and silicone foam sealing belt are all made of 100% fumed silica collagen material added to the foaming agent through high temperature oven curing, resulting in a large amount of air during the curing process, resulting in a large number of small holes in the silicone. The product is characterized by high temperature resistance, good elasticity, high-quality high-temperature silicone foam strip can continue to work at 300 degrees high temperature without qualitative change.

2、Product Description 


a. Environmentally,  insulation, compression, perfect  elasticity, high tensile strength. 

b.Heat resistance,acid and alkali resistant, anti-aging, non-toxic, odorless, odourless, anti-oil,water-proof,anti-ozone,light-proof aging

c. Small tolerances, uniform foam density, soft

d. Good surface layer is not sticky,good air permeability 

2)Application field

Closed Cell Silicone Sponge square cord、Silicone Sponge strip is made of silica collagen material and foaming agent, so it is also called foamed silica gel strip. Used for door sealing strips of high temperature ovens, ovens, high temperature resistance ovens, dust collectors, high temperature muffles, electrical appliances, box type high temperature ovens, etc. Lighting industry, electrical appliances industry, electronic industry, small household appliances industry, household appliances industry, medical equipment industry, gift industry, automotive door and window industry, automotive footpad industry, door and window industry, machinery industry, cabinet industry, etc. 

 3)Technical Data



Test Standard

Tensile Strength

6.0 M pa


Breaking Strength

55 K n/m

ASTM D1458





15~70 Shore A

ASTM 2240

Temperature Range

-40~220 C



0.7~1.35 g/cm3


Thermal Conductivity

0.06 w/m*k

ASTM D5470

Breakdown Voltage

25 K V


Notes: 1.25~1.35 g/cm3 =0.045~0.049 Lb/in3     


Round strip:Φ2 Φ3 Φ4 Φ5 Φ6 Φ7 Φ8 Φ10 Φ12 Φ14 Φ15 Φ16 Φ18 Φ20 v22 Φ30 Φ50

Square strip: 4*4 6*6 8*8 10*10 14*14 16*16 18*18 20*20 25*25 30*30 40*10 50*10 60*10 80*10 90*10 100*10

Special strip: p- style,  e -style and the other style customized on demand 


Black, Red,Blue, White, others can be customized


5)Our advantages

1)Professional rubber molded parts manufacturer
2)Almost 20 years experience in rubber industry
3)High quality with rearonable/cheap/Factory/price

4)More than 5000 kinds supply 

5)Small orders are welcomed 
6)Best /Excellentservice and fast respond、prompt reply


6)Our Services

1)We will reply your enquiry in 8 hours,any time you can contact us.
2)OEM, buyer design, buyer label service is available.
3)We can provide free sample for your testing.
4)We have the certification of ISO 9001,TS16949
5)Special discount and protection of sales area provided to our distributor.
6)Timely delivery
7)packing can make client brand.
8)Good after-sale service

7、Company Information

We manufacture for various rubber products, our main rubber products are: Auto rubber parts、Rubber grommet, Rubber washer, Rubber boots, Bushings, Seals, Rubber bumper (buffer), Rubber Gaskets, O-ring, metal-to-rubber parts, Demister, Anti-vibration mountings, and so on. Most of our product was applied to auto & motorcycle parts, electric components, and household accessories. We welcome customize order!


1)Express(fast,samples are suggested) 
2)By air,(fatest,high expense)
3)By sea(large order,longer time,cheapest).
4)The standard shipping is 10-22 working days. The expedited shipping is 3-5 working days,. 
5)All international orders may be subject to their custom fees or duty tax which we do not pay.
6)All buyers must pay for their own customs fees or brokerage fees or duty tax.
These fees vary due to price of item and government rate. Please contact your government website or shipping company to calculate fees.

1)Q: Do you have a factory?
A:We have factory in Zhejiang.We have the most convenient transportation conditions. You can visit us at anytime,

2)Q: Can you do OEM?
A: Yes, we can do OEM products. It's no problem. 

3)Q:How can I get the samples?
A:We are honored to offer you samples. New clients are expected to pay for the courier cost,the samples are free for you,this charge will be deducted from the payment for formal order.Regarding the courier cost: you can arrange a RPI (remote pickup) service upon Fedex, UPS, DHL, TNT, etc.Or inform us your DHL collection account. Then you can pay the freight direct to your local carrier company.

4)Q:How does your factory do regarding quality control? 
A:"Quality is priority? Our worker always attach great importance to quality controlling from the very beginning to the very end:
1)All raw material we used are environmental-friendly;
2)Skillful workers care every details in handling the producing and packing processes;
3)Quality Control Department specially responsible for quality checking in each process.




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