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Five-hole B-shaped automotive weatherstrip

Product Description

Product Overview

The five‑hole B‑shaped automotive weatherstrip is manufactured via integrated extrusion and vulcanization using high‑quality EPDM rubber. It features a B‑shaped cross‑section combined with an internal five‑hole hollow structure, making it a premium sealing strip specially designed for car doors, door frames, trunks, and hoods. It delivers multiple functions in one: waterproofing and water drainage, sound insulation and noise reduction, dust and wind resistance, impact cushioning, and thermal insulation—suitable for both original‑equipment replacement and aftermarket installation.

Structural features

B-shaped exterior design
It conforms to the curvature of the door frame’s metal panel, ensuring a tight fit and excellent sealing. The door closes with gentle cushioning—smooth, not stiff, and free of unusual noises.
Five-hole multi-chamber hollow structure
Five independent air‑cell chambers inside provide enhanced elasticity, greater compression, and superior resistance to deformation under pressure.
Multi-chamber layered barrier design delivers soundproofing, waterproofing, and thermal insulation performance that far surpasses that of conventional single‑hole sealing strips.
Wear- and weather-resistant outer layer
The surface is aging-resistant, UV‑resistant, and capable of withstanding extreme temperatures; it remains crack‑free, does not become brittle, and does not shrink even after prolonged exposure to wind and sunlight.
High-elastic, dense base
The bottom features a snug, slot‑fit design that ensures a secure hold, preventing loosening or detachment even during bumpy rides.

Core Product Advantages

✅ Five-hole, multi-chamber design delivers exceptional sound insulation; multiple chambers effectively block wind noise, road noise, and tire noise, significantly enhancing cabin quietness.
✅ Type B water‑guiding and waterproof design with an integrated drainage system; rainwater flows smoothly along the channels, effectively preventing water seepage and leaks from the doors and trunk.
✅ High‑elastic cushioning and impact protection: hollow five‑hole design with excellent toughness; soft, flexible door‑closing buffer to safeguard sheet metal and minimize impact‑induced noise.
✅ Weather-resistant with a long service life—operates reliably from -40°C to 120°C, resistant to high and low temperatures, ozone‑resistant, and aging‑resistant; maintains its shape even after years of continuous use.
✅ Dustproof, windproof, and thermally insulated—seals gaps in the vehicle body to block dust, cold air, and hot air, helping your air conditioner use less energy.
✅ Wide compatibility: Fits the original vehicle model; can be installed and replaced on sedans, SUVs, MPVs, and vans.

Applicable Installation Location

Four-door door frame and complete door sealing
Trunk lid upper edge and side gap seal
Hood edge, front-body panel seam
Roof-mounted pillars and large body gaps—modified and added on.
Suitable for all types of passenger cars, SUVs, business vehicles, and vans.

Applicable Scenarios

If the original rubber seals have aged and cracked, causing air and water leaks, increased noise, or loose door closure, you can replace them with a five‑hole B‑shaped weatherstripping. Alternatively, you can upgrade the entire vehicle to enhance sound and water insulation, as well as sealing and thermal‑insulation performance.

Hebei Qunwo Rubber Products Co., Ltd. We specialize in manufacturing a wide range of sealing strips and seals, including silicone sealing strips and seals, PVC sealing strips, rubber and plastic products, EPDM foam strips, EPDM seals, automotive composite sealing strips, marine and cold‑storage sealing strips, self‑adhesive high‑temperature and oil‑resistant sealing strips, oil‑resistant sealing tubes, mechanical sealing strips, engineering sealing strips, door and window sealing strips, custom‑shaped sealing strips, and various colored sealing strips. We also offer tailor‑made solutions to meet our customers’ specific needs. Samples can be mailed, drawings can be sent, or you can provide the profile directly; our experienced technicians will design the most suitable door and window sealing strips based on your specifications, ensuring that we satisfy the diverse requirements of each client. We maintain rigorous quality control and continuously enhance our after‑sales service, confident that our collaboration will be both enjoyable and mutually beneficial.

Test equipment

Customization Process

We provide a complete one-stop custom process: from requirement communication, design and sampling, to mass production, delivery and after-sales support, ensuring efficient and reliable customized sealing solutions.

Inquiry & Product Selection

Confirm Material, Size & Performance

Sample / Drawing / Profile Confirmation

Design & Quotation

Mold & Sample Making

Sample Approval & Order

Production & Quality Control

Delivery Confirmation

Five-hole B-shaped automotive weatherstrip

The five‑hole B‑shaped automotive weatherstrip is manufactured via integral extrusion and vulcanization using high‑quality EPDM rubber. Its cross‑section features a distinctive B‑shape combined with an internal five‑hole hollow structure. Designed as a premium sealing strip for car doors, door frames, trunks, and hoods, it delivers comprehensive performance: waterproofing and water drainage, sound insulation and noise reduction, dust and wind resistance, impact cushioning, and thermal insulation. It is suitable for both original‑equipment replacement and aftermarket installation.

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Product Description

Product Overview

The five‑hole B‑shaped automotive weatherstrip is manufactured via integrated extrusion and vulcanization using high‑quality EPDM rubber. It features a B‑shaped cross‑section combined with an internal five‑hole hollow structure, making it a premium sealing strip specially designed for car doors, door frames, trunks, and hoods. It delivers multiple functions in one: waterproofing and water drainage, sound insulation and noise reduction, dust and wind resistance, impact cushioning, and thermal insulation—suitable for both original‑equipment replacement and aftermarket installation.

Structural features

B-shaped exterior design
It conforms to the curvature of the door frame’s metal panel, ensuring a tight fit and excellent sealing. The door closes with gentle cushioning—smooth, not stiff, and free of unusual noises.
Five-hole multi-chamber hollow structure
Five independent air‑cell chambers inside provide enhanced elasticity, greater compression, and superior resistance to deformation under pressure.
Multi-chamber layered barrier design delivers soundproofing, waterproofing, and thermal insulation performance that far surpasses that of conventional single‑hole sealing strips.
Wear- and weather-resistant outer layer
The surface is aging-resistant, UV‑resistant, and capable of withstanding extreme temperatures; it remains crack‑free, does not become brittle, and does not shrink even after prolonged exposure to wind and sunlight.
High-elastic, dense base
The bottom features a snug, slot‑fit design that ensures a secure hold, preventing loosening or detachment even during bumpy rides.

Core Product Advantages

✅ Five-hole, multi-chamber design delivers exceptional sound insulation; multiple chambers effectively block wind noise, road noise, and tire noise, significantly enhancing cabin quietness.
✅ Type B water‑guiding and waterproof design with an integrated drainage system; rainwater flows smoothly along the channels, effectively preventing water seepage and leaks from the doors and trunk.
✅ High‑elastic cushioning and impact protection: hollow five‑hole design with excellent toughness; soft, flexible door‑closing buffer to safeguard sheet metal and minimize impact‑induced noise.
✅ Weather-resistant with a long service life—operates reliably from -40°C to 120°C, resistant to high and low temperatures, ozone‑resistant, and aging‑resistant; maintains its shape even after years of continuous use.
✅ Dustproof, windproof, and thermally insulated—seals gaps in the vehicle body to block dust, cold air, and hot air, helping your air conditioner use less energy.
✅ Wide compatibility: Fits the original vehicle model; can be installed and replaced on sedans, SUVs, MPVs, and vans.

Applicable Installation Location

Four-door door frame and complete door sealing
Trunk lid upper edge and side gap seal
Hood edge, front-body panel seam
Roof-mounted pillars and large body gaps—modified and added on.
Suitable for all types of passenger cars, SUVs, business vehicles, and vans.

Applicable Scenarios

If the original rubber seals have aged and cracked, causing air and water leaks, increased noise, or loose door closure, you can replace them with a five‑hole B‑shaped weatherstripping. Alternatively, you can upgrade the entire vehicle to enhance sound and water insulation, as well as sealing and thermal‑insulation performance.