Square Sealing Rubber Washer
Material: Silicone, natural rubber, EPDM, NBR, SBR, ABS, PVC, foam and so on.
Diameter: 0.3 mm-700 mm, strictly manufacture according to customer’s drawings.
Shape: Based on customer’s drawings, round, square, bellow, strip, ball, rod, tube, special shape is OK.
Color: Black, white, transparent, red, blue, yellow, green, grey and so on.
Logo: Printing, Embossed, Debossed and filled with color, custom made
High-Precision Square Rings – Premium Static Seals for High-Pressure & Leak-Free Applications
Product Overview
Square Rings, also known as washer-cut rings, feature a square-shaped cross-section that provides a larger sealing surface area than standard O-rings. Designed specifically for high-stress static applications, our square rings offer superior resistance to extrusion and "rolling" within the groove, ensuring a long-lasting, reliable seal for critical industrial and automotive systems.
Why Choose Our Square Rings? (Key Advantages)
✅ Superior Sealing Surface
The flat sides of a square ring provide more contact area against the sealing surface. This ensures a tighter seal under low-pressure conditions and prevents leakage in environments where O-rings might fail.
✅ No Rolling or Twisting
Unlike O-rings, which can twist or "spiral" during installation or under pressure, the square geometry provides mechanical stability. It sits firmly in the groove, making it the ideal choice for high-pressure static joints.
✅ High Extrusion Resistance
Under extreme pressure, sealing elements tend to get pushed into the gap (extrusion). The square cross-section is naturally more rigid, resisting deformation and maintaining its shape far better than circular profiles.
✅ Precision Fit & Interchangeability
Our square rings are designed to fit into standard O-ring grooves (AS568 and metric sizes), allowing for a seamless upgrade to your existing system without re-machining your hardware.
Core Applications
Hydraulic & Pneumatic Systems:
Ideal for valve bodies, pumps, and cylinder end caps.
Automotive Engineering:
Used in fuel systems, transmission housings, and brake components.
Industrial Filtration:
Providing a secure seal for filter housings and pressurized canisters.
Fluid Power:
Reliable sealing for flanges and pipe joints where vibration is present.
Customization Capabilities (HeroDura Custom)
Bespoke Sizes:
Custom inner diameters (ID) and cross-sections (CS) to fit non-standard grooves.
Material Tailoring:
Specialized compounds for chemical resistance, low friction, or high-vacuum environments.
Color Coding:
Available in black, red, blue, or custom Pantone colors for easy part identification during assembly.
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