PU Seal Strip

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Polyurethane (PU) is a kind of plastic, or more specifically an elastomer polymer, including rubber. Since its first invention in 1937, Polyurethane rubber has been used to produce a wide range of products. This PU material has extraordinary versatility, durability, flexibility, adaptability, and elasticity. in addition, Polyurethane is synthesized from polyisocyanate and polyol. Its mechanical properties give it the strength of hard plastic and the elasticity of rubber. Kinglin as trusted China manufacturer of customized pu seal strips, supplying sealing solutions to oversea market.

PU Foam Seal Door Weatherstripping Product parameter

1. Material Composition:
High-density Polyurethane (PU) Foam with closed-cell structure for superior insulation and durability.

2. Compression Set Resistance:
High compression recovery, retaining 90% or more of its original thickness after compression, ensuring a long-lasting and reliable seal.

3. Temperature Range:
Operational temperature range: -40°F to 160°F (-40°C to 70°C), making it suitable for diverse climates and conditions.

4. Color Options:
Commonly available in neutral colors such as white, brown, black, and grey to match various door frames and aesthetics.

5. Installation Type:
Kerf-In Style: Fits directly into the kerf slot on the door frame, requiring no adhesive.
Self-Adhesive Backing: Equipped with strong, pressure-sensitive adhesive for easy peel-and-stick installation.

6. UV and Weather Resistance:
Treated with UV inhibitors and weather-resistant coatings to prevent degradation from sunlight, moisture, and extreme weather conditions.

7. Water Absorption Rate:
A low water absorption rate, typically less than 5% by volume, ensures that the foam remains effective in sealing against water and moisture.

8. Water Absorption Rate:
A low water absorption rate, typically less than 5% by volume, ensures that the foam remains effective in sealing against water and moisture.

9. Sound Insulation Rating:
Noise Reduction Coefficient (NRC): Typically ranges from 0.35 to 0.45, providing effective soundproofing capabilities.

10. Hardness (Shore A):
Typically between 10 to 25 Shore A, offering a balance of softness for compression and firmness for durability.

Advantages of pu seal strip

Due to its unit structure, PU seal strips provide acoustic and thermal conductivity solutions. Additionally, it can also provides various professional-level conductive, electrostatic dissipation, and flame retardant solutions. Outstanding performances are list below:
1. Extremely light
2. Good sealing performance (air, dust, and water migration)
3. Good UV and ozone resistance
4. Good thermal insulation

Application of polyurethane and its strip

Polyurethane strips (PU seal strip) are a multipurpose material for shock absorption and cushioning. It is a common choice for packaging and insulation applications. In addition, PU seal strips are stronger than comparable rubber materials and are typically used in high-tension and high-wear applications. It has excellent tensile strength, tear resistance and shock absorption performance.

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