{"id":571,"date":"2026-04-20T05:41:08","date_gmt":"2026-04-20T05:41:08","guid":{"rendered":"https:\/\/www.saiaseal.com\/?p=571"},"modified":"2026-04-20T05:41:50","modified_gmt":"2026-04-20T05:41:50","slug":"%e5%a6%82%e4%bd%95%e6%8c%91%e9%80%89%e4%b8%aa%e6%80%a7%e4%bb%b7%e6%af%94%e4%b8%89%e5%85%83%e4%b9%99%e4%b8%99%e5%af%86%e5%b0%81%e6%9d%a1","status":"publish","type":"post","link":"https:\/\/www.saiaseal.com\/en\/%e5%a6%82%e4%bd%95%e6%8c%91%e9%80%89%e4%b8%aa%e6%80%a7%e4%bb%b7%e6%af%94%e4%b8%89%e5%85%83%e4%b9%99%e4%b8%99%e5%af%86%e5%b0%81%e6%9d%a1\/","title":{"rendered":"How to choose a cost-effective EPDM sealing strip"},"content":{"rendered":"

Why should we pay attention to the selection of EPDM sealing strips?<\/h2>

1. Material differences lead to significant performance differences<\/p>

Taking the case of Ms. Wang, a homeowner in Beijing, as an example, PVC sealing strips have a lifespan that is more than 50% shorter than EPDM, resulting in paying nearly a thousand yuan more in heating fees each year 
2. Market chaos is widespread<\/p>

According to a survey conducted by the Guangdong Doors and Windows Association, 72% of household sealing strips have material misjudgments in their selection 
3. The invisible function has a significant impact<\/p>

As the \"invisible guardian\" of doors, windows, cars, and home appliances, sealing strips are directly related to core performance such as sound insulation, thermal insulation, and waterproofing 
4. Significant long-term economic differences<\/p>

High quality EPDM sealing strips have a lifespan of 15-20 years, while inferior products only last 2-3 years, resulting in a long-term cost difference of over 10 times<\/p>

Which specification of EPDM sealing strip should be selected for different scenarios<\/h2>

How to choose the specifications for door and window sealing strips?<\/h5>

1. Suitable structure for casement windows<\/p>

D-type or P-type hollow structures should be selected, which can form an air buffer layer during compression and increase sound insulation by 30% compared to solid rubber strips 
2. Suitable structure for sliding windows<\/p>

It needs to be equipped with a U-shaped winged structure, and the side wings can effectively fill the sliding gap. The water tightness can reach 0.3MPa (equivalent to a pressure of 3 meters deep) 
3. Basis for specification selection<\/p>

According to the size of the window frame slot, the cross-sectional size of the rubber strip should be 15% -20% larger than the slot to ensure compression<\/p>

What are the special requirements for sealing strips in different parts of cars?<\/h5>

1. Door frame sealing strip<\/p>

Plush treatment is required to reduce friction noise and improve the smoothness of door opening and closing 
2. Engine compartment sealing strip<\/p>

Materials with good oil resistance must be selected through oil resistance testing (volume change rate \u2264 15% after soaking in IRM903 oil for 70 hours) 
3. Sunroof sealing strip<\/p>

Emphasize weather resistance (QUV aging test for 3000 hours without cracks) 
4. Sealing strip for battery pack<\/p>

Adopting an irregular composite structure, the inner layer is made of EPDM to ensure elasticity, and the outer layer is made of TPV to enhance wear resistance, with good waterproofing<\/p>

What are the special requirements for household appliance sealing strips?<\/h5>

1. Refrigerator door seal<\/p>

Magnetic composite layer is required to ensure stable adsorption force below 0 \u2103 
2. Sealing strip for air conditioning cabinet unit<\/p>

Require low VOC emissions (\u2264 10 \u03bc g\/m \u00b3) 
3. Sealing strip for water dispenser\/water purifier<\/p>

Seals that come into contact with drinking water must comply with the \"Specification for Sanitary and Safety Evaluation of Drinking Water\" 
4. Microwave oven sealing strip<\/p>

Must meet both high temperature resistance (above 120 \u2103) and aging resistance requirements simultaneously<\/p>","protected":false},"excerpt":{"rendered":"

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