Custom Rubber Cord China Manufacturer and Supplier

Seashore Rubber is a rubber cord manufacturer offering precision-extruded rubber cord in silicone, EPDM, neoprene, NBR, natural rubber, and Viton materials. Our rubber cords provide excellent weather, oil, heat, abrasion, and chemical resistance for sealing, gasket, automotive, marine, and industrial applications. Available in diameters from 1 mm to 50 mm with custom lengths, colors, and hardness. We support bulk orders, fast production, stable quality control, and competitive factory-direct pricing for global customers.

What Is Rubber Cord?

Rubber cord is a cylindrical rubber extrusion available in continuous lengths or cut-to-size sections. It is commonly used for:

  • O-ring cord stock
  • Gasket fabrication
  • Waterproof sealing
  • Shock absorption
  • Edge protection
  • Expansion joints
  • Insulation applications

Rubber cords can be joined into custom O-rings using vulcanization or adhesive bonding, making them a cost-effective solution for non-standard sealing requirements.

Types of Rubber Cord

Solid Rubber Cord

Solid rubber cord provides excellent mechanical strength, abrasion resistance, and long-term sealing performance. It is ideal for:

  • Hydraulic sealing
  • Industrial machinery
  • Automotive applications
  • Heavy-duty gaskets

Advantages

  • High tensile strength
  • Excellent compression resistance
  • Long service life
  • Good chemical resistance

Sponge Rubber Cord

Sponge rubber cord features a closed-cell or open-cell structure that offers flexibility and compressibility. It is ideal for:

  • Weather sealing
  • Door and window sealing
  • HVAC systems
  • Waterproof enclosures

Advantages

  • Lightweight
  • Excellent cushioning
  • Superior flexibility
  • Air and water sealing performance

Rubber Cord Material Comparison

Material Temp. Range Oil Resistance UV / Ozone Chemical Resistance Cost Tier Typical Use
Silicone −60 °C to +200 °C

Low

 Excellent Good $$$ High Food, medical, aerospace
EPDM −50 °C to +150 °C

Poor

 Excellent Good (acids) $ Low Outdoor, HVAC, construction
Neoprene −40 °C to +120 °C

Moderate

 Good Moderate $$ Mid Marine, HVAC, general industry
NBR / Nitrile −30 °C to +120 °C

Excellent

 Poor Moderate $ Low Hydraulic, automotive, fuels
Natural Rubber −50 °C to +80 °C

Poor

 Poor Good (mild) $ Low Vibration isolation, general
Viton® / FKM −20 °C to +230 °C

Excellent

 Excellent Excellent $$$$ Premium Oil & gas, chemical, aerospace

Where Rubber Cord Is Used

🚗 Automotive

Door seals, sunroof perimeters, engine bay gaskets, trunk seals, and weatherstripping

🏗️ Construction

Expansion joint filling, curtain wall glazing seals, window frame gaskets, and structural glazing

❄️ HVAC

Duct sealing, refrigerant-resistant cord, access panel gaskets, and thermal insulation seals

🍔 Food & Beverage

FDA silicone cord for processing equipment, cold-room door seals, and tank hatches

⚙️ Industrial Machinery

Hydraulic cylinder seals, vibration isolation mounts, gearbox gaskets, and enclosure seals

✈️ Aerospace

Fuel-system FKM cord, airframe access panel seals, and cabin environmental sealing

⚓ Marine

Hatch seals, porthole gaskets, watertight compartment seals, and neoprene deck joints

💊 Pharmaceutical

Cleanroom-compatible silicone cord for reactor vessels, bioreactors, and cleanroom doors