503 Series: Face Seal
The 503 Series is a great replacement for standard large-diameter O-rings.
503 Series
The 503 series is used as the primary static seal in heavy duty steel and aluminum applications in severe conditions.
Installation Drawing
Material Ranges
The 503 series Heavy-Duty Face Seal features high-grade polyurethane. Standard materials are MP03 machined H-PU, available up to 2100mm in diameter.
| Polyurethane H-PU | MP03 |
| Nitrile NBR | MN01 |
| Fluoroelastomer FPM | MF01 |
| Hydrogenated NBR | MN03 |
| EPDM/PTFE-Bz | ME19 |
Temperature Ranges
MP30
°C
°F
hydraulic oil
-20…+115
hydraulic oil
-5…+240
water oil emulsions (HFA)
+5…+55
water oil emulsions (HFA)
+40…+130
water glycol fluids (HFC)
-20…+55
water glycol fluids (HFC)
-5….+130
water
+5…+55
water
+40…+130
Pressure
400 bar (6000 psi)
Pressure
400 bar (6000 psi)
Designed for flexibility across materials, sizes, and performance requirements. Standard and custom diameters ensure optimal integration into your system.
Engineered Performance
Built to Perform
The 503 series is used as the primary static seal in heavy duty steel and aluminum applications in severe conditions.
Benefits
- No twisting or rolling during installation
- Direct retrofit to O-ring and backup ring designs
- Extrusion resistant
- Abrasion-resistant polyurethane
- Long life due to robust design
Applications
- Mobile Hydraulics
- Hydraulic Cylinder Rebuild
- Agricultural Hydraulics
- Construction Equipment
- Steel and Aluminum Processing
