Ningbo Zhonggao Rubber & Plastic Manufacturing Co., Ltd. is one of the most reliable manufacturers and suppliers of extruded rubber strip in China. The company has world-leading production equipment and strong manufacturing capabilities. Welcome to wholesale custom made extruded rubber strip from our factory.
Extruded Rubber Strips
Extruded rubber strips provide continuous sealing, cushioning, insulation, or edge protection in custom profiles matched to specific installation requirements. They support different rubber materials, hardness levels, cross-sections, and lengths for applications requiring reliable fit and consistent performance.
Technical Specifications
Rubber Material Selection：
|
Rubber Material |
Key Performance |
|
NBR |
Oil & Wear Resistance |
|
FKM |
High-Temperature & Chemical Corrosion Resistance |
|
PU |
High-Wear & Extrusion Resistance |
|
EPDM |
Water, Steam & Aging Resistance |
|
Silicone |
Extreme Temperature Resistance & Biocompatibility |
Extruded Rubber Strip Specifications：
|
Parameter |
Reference Value / Range |
|
Rubber Material |
NBR; FKM; PU; EPDM; Silicone |
|
Profile Width / Height |
1–100 mm* |
|
Wall Thickness |
1–10 mm* |
|
Profile Dimension Tolerance |
≤ ±0.1 mm |
|
Hardness |
NBR: 60–80 Shore A*; FKM: 70–90 Shore A*; PU: 70–95 Shore A*; EPDM: 50–80 Shore A*; Silicone: 40–80 Shore A* |
|
Temperature Range |
NBR: −40°C to +120°C*; FKM: −20°C to +320°C; PU: −40°C to +80°C*; EPDM: −70°C to +220°C; Silicone: −70°C to +220°C |
|
Applicable Pressure |
0–30 MPa |
|
Tensile Strength |
NBR: 8–14 MPa*; FKM: 8–15 MPa*; PU: 20–40 MPa*; EPDM: 8–15 MPa*; Silicone: 5–9 MPa* |
|
Elongation at Break |
NBR: 200–400%; FKM: 150–300%; PU: 300–600%; EPDM: 300–500%; Silicone: 300–600%* |
|
Compression Set |
≤20–30%* |
|
Friction Reduction |
30–40% with specially lubricated surface |
|
Dynamic Wear Rate |
Approximately 1/3 of ordinary rubber |
|
Service Life |
Approximately 2–3× ordinary rubber under comparable dynamic conditions |
|
Weight Reduction |
20–30% through density optimization |
|
Length |
Continuous or cut-to-length; 10–500 m* continuous length; 10–3,000 mm* cut length |
*Final values should be confirmed against the approved material, profile drawing, and application requirements.
Custom Extruded Rubber Strips
We manufacture custom extruded rubber strips based on your drawing, sample, profile dimensions, material requirements, and application conditions.
Custom Size & Profile
We can produce:
- Custom width, height, wall thickness, and cross-section dimensions
- Rectangular, trapezoidal, L-shaped, and other profiles
- Special-shaped profiles designed for specific grooves, gaps, or installation structures
- Continuous lengths, straight lengths, and cut-to-length strips
Rubber Material & Hardness
Material and hardness can be selected according to:
- Operating and peak temperature
- Oil, water, fuel, or chemical contact
- UV, ozone, and weather exposure
- Compression, wear, and sealing requirements
- Static or dynamic working conditions
Available materials include NBR, FKM, PU, EPDM, and silicone rubber, with selection based on the required application performance.
Drawing / Sample
You can provide:
- CAD or technical drawings
- Cross-section dimensions and tolerances
- Groove or mating-part dimensions
- Rubber material and hardness requirements
- Existing rubber strip samples
- Operating and installation conditions
We can use these details to review the profile, select the material, develop the extrusion tooling, and produce samples for application verification.
Tooling & Production
Custom extrusion tooling can be developed for your required profile, with production options including:
- Custom extrusion die development
- Profile optimization based on the application
- Sample production before mass production
- Repeat production using approved tooling
- Continuous or cut-to-length production
OEM Service
We support custom:
- Profile dimensions and cross-sections
- Rubber material and hardness
- Color, length, and marking
- Cutting and packaging
- Labels and part numbers
- OEM production based on customer drawings or customer-provided tooling
For customer-provided tooling, the tooling can be dedicated to the customer's project, while we keep the related drawings, specifications, and project information confidential to protect customer designs and intellectual property.
Extruded Rubber Strip Applications
Extruded rubber strips are used for sealing, cushioning, weather protection, edge protection, and insulation across automotive, industrial, building, electrical, and equipment applications.
Sealing & Weather Protection
- Doors, windows, cabinets, enclosures, and equipment panels
- Automotive doors, body panels, compartments, and other sealing interfaces
- Outdoor equipment requiring protection against water, dust, UV, and weather exposure
Cushioning & Vibration Isolation
- Machinery, equipment panels, housings, and structural interfaces
- Components requiring impact absorption, vibration reduction, or controlled compression
Edge Protection & Insulation
- Metal sheet edges, panels, covers, and openings
- Electrical equipment and enclosures requiring insulation or protection between mating surfaces
Industrial & Specialized Equipment
- Hydraulic systems, industrial machinery, and high-pressure sealing applications
- Medical equipment, laboratory equipment, and precision devices
- Building, HVAC, and other equipment requiring continuous rubber profiles
Extruded Rubber Strip Manufacturing
With a 5,000 m² factory, 20 production lines, 40+ experienced technicians, and 20,000+ molds, we support custom extruded rubber strips from profile development and tooling to samples and mass production. The production system can scale to up to 10 million rubber parts per month, supporting stable supply for prototype validation, initial orders, and recurring high-volume production.
Profile Sample → Material Confirmation → Dimensional Inspection Results → Physical Property Test Results → Application Test / Fit Verification → Approved Sample for Mass Production
For buyers, this production capacity supports shorter sampling cycles, stable profile availability, and reliable supply for repeat orders, while established tooling and production resources help reduce the risk of dimensional variation, production interruptions, and inconsistent batches as order volumes increase.
We can assure specification traceability by the process:
Drawing / Sample Review → Material & Profile Confirmation → Tooling → Sample → Approval → Mass Production
Extruded Rubber Strip Quality Control
-
Raw Material Inspection
Rubber compounds are checked against the approved material, hardness, and application requirements before extrusion to verify material conformity.
-
Profile & Dimensional Inspection
Critical width, height, wall thickness, cross-section, and other profile dimensions are inspected against the approved drawing, specifications, and applicable tolerances throughout production.
-
Physical Property Testing
Applicable hardness, tensile strength, elongation, compression-set, and other physical properties are tested against approved product requirements and relevant test methods.
-
Extrusion Tooling & Profile Control
Extrusion dies are developed and controlled according to the approved profile, with tooling condition, profile stability, and dimensional consistency checked to support repeat production from the same specification.
-
Appearance & Surface Inspection
Finished strips are inspected for surface defects, cracks, blisters, foreign matter, uneven edges, deformation, and other visible defects that could affect sealing, installation, or appearance.
-
Finished Product & Batch Inspection
Finished products are checked against approved specifications before packing, while production and inspection records support batch traceability and consistent quality across repeat orders.
Zhonggao's quality system includes dedicated QC personnel, laboratory testing equipment, automatic inspection equipment, raw-material inspection, and finished-product inspection, supported by IATF 16949, ISO 9001, ISO 14001, and ISO 45001 certifications.
Extruded Rubber Strip B2B Supply
The supply process can be arranged around the buyer's approved specifications, production quantity, delivery schedule, packaging requirements, and repeat-order needs.
- Prototype & Sample Lead Time: Prototype and sample production is available before mass production, with a typical sample lead time of 3–15 days.
- MOQ: MOQ is flexible according to gasket size, process, tooling, and project requirements.
- Mass Production Lead Time: Small, medium, and large-volume orders are supported with a typical lead time of 10–30 days.
- Inspection Documents: Material and inspection reports available according to project requirements.
- Packaging: Bulk, bagged, labeled, barcode, or customer-specified packaging.
- Quality Issues: A 1-year quality guarantee is provided for qualified product quality issues.
FAQ
Q: What is the difference between solid and sponge extruded rubber strips?
A: Solid rubber strips provide higher sealing force and structural support, while sponge strips offer lower compression force and better gap filling for less demanding sealing applications.
Q: Can extruded rubber strips be used for dynamic sealing applications?
A: Yes, PU, NBR, and other suitable compounds can be used for applications involving repeated movement, friction, wear, or dynamic sealing.
Q: Can extruded rubber strips be supplied as closed-loop seals?
A: Yes, continuous extruded profiles can be cut and joined into closed-loop or frame-shaped seals according to the required dimensions and assembly configuration.
Q: How are extruded rubber strips packaged for long-distance shipping?
A: Extruded rubber strips can be packaged in coils, bundles, or specified cut lengths with suitable protection to reduce bending, compression, and deformation during transportation.
Q: Can extruded rubber strips be cut into specific lengths?
A: Yes, continuous extruded profiles can be supplied as specified cut lengths according to the required part dimensions and assembly requirements.
Q: Can extruded rubber strips be supplied in continuous rolls?
A: Yes, continuous profiles can be supplied in roll or coil form when the profile dimensions, minimum bending radius, and packaging requirements allow it.
Q: What affects the service life of an extruded rubber strip?
A: Service life is mainly affected by material selection, temperature, chemical or fluid exposure, compression, friction, UV and ozone exposure, and mechanical loading.
Q: Can extruded rubber strips be used for outdoor applications?
A: Yes, EPDM and silicone can be selected for outdoor applications requiring resistance to weathering, UV exposure, ozone, and temperature changes.
Q: Can you ensure consistency for batch orders of 5,000, 50,000, and 500,000 pieces?
A: Yes, approved specifications, controlled extrusion tooling, raw-material inspection, profile dimensional checks, finished-product inspection, and batch traceability are used to maintain consistency across 5,000-, 50,000-, and 500,000-piece orders.
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