Square & Rectangular Profiles
Precision square and rectangular cross-section extruded rubber cords engineered for groove packing, hatch sealing, concrete expansion joints, and structural vibration isolation.
Types & Configurations of Square & Rectangular Profiles
Solid Square Sealing Cords
Precision extruded solid square rubber designed for machined mating flange grooves.
Closed-Cell Sponge Rectangular Strips
Cellular EPDM sponge strips providing weather-tight seal under light clamping force.
High-Durometer Load Packing Blocks
80 Shore A rectangular elastomer strips supporting heavy precast concrete slabs.
Fluorocarbon (Viton) Rectangular Cords
Extreme temperature and hydrocarbon resistant square cords for chemical pump flanges.
Conductive EMI Shielding Square Strips
Silver/nickel particle loaded elastomer providing environmental and RF shielding.
Key Industrial Applications
Specifications & Technical Details
Square & Rectangular Profiles can be precision-manufactured in custom dimensions, wall thicknesses, cross-sections, and durometers to match your exact application specifications. Below are typical engineering cross-section drawings and technical parameters for reference.
Typical Dimension Drawings & Blueprint Cross-Sections
Technical Specifications
| Parameter | Specification / Options |
|---|---|
| Cross-Sections | 2mm x 2mm up to 100mm x 50mm rectangular sections |
| Tolerances | DIN ISO 3302-1 Class E2 precision extrusion tolerance |
| Hardness Range | 40A to 85A Shore A (solid); 0.40 to 0.75 g/cm³ (sponge) |
| Tensile Strength | Up to 15.0 MPa (solid rubber ASTM D412) |
| Continuous Lengths | Supplied in coils of 25m, 50m, 100m or precision vulcanized endless rings |
| Polymer Options | EPDM, Nitrile (NBR), Neoprene, Natural Rubber, Silicone, Viton® |
| Operating Temp | -40°C to +130°C (Silicone up to +250°C) |
Material Selection & Properties
We offer specialized compound formulations tailored to chemical media, thermal extremes, static deflection, and dynamic fatigue requirements. The best material depends on your operating environment and required service life.
| Material / Polymer | Key Engineering Properties | Recommended Applications & Considerations |
|---|---|---|
| EPDM Dense Rubber | Extreme weather, ozone & UV radiation resistance | Automotive door/window seals, building facade gaskets |
| EPDM Sponge / Foam | Low closure force, closed-cell water & dust sealing | Enclosure door perimeter gaskets, electrical cabinet seals |
| Nitrile (NBR) Extrusion | Resists mineral oils, hydraulic fluids & greases | Machinery inspection hatch seals, oil sump gaskets |
| Neoprene (CR) Rubber | Self-extinguishing, marine atmospheric stability | Ship portlights, railway carriage door profiles |
| Natural Rubber (NR) | High tear strength, abrasion resistance & elasticity | Chute edge protectors, quarry screening rubber strips |
Important Engineering Guidance
The above properties are general characteristics. Final material selection depends on your specific application, operating conditions, load requirements, media compatibility, and service temperature. Please contact our polymer engineering team for tailored compounding guidance on Square & Rectangular Profiles.
Production Batch Gallery
Actual production batch examples of Square & Rectangular Profiles manufactured for OEM, automotive, railway, and heavy engineering clients. We manufacture standard catalogue sizes as well as bespoke custom geometries from your CAD models or physical samples.
Request an Engineering Quote
Share your required dimensions, polymer grade, or 2D/3D drawings for immediate engineering review and quote.