261 Series: Static Seal
The 261 Series Mill-Duty Static Seal is a great replacement for standard large-diameter O-rings.
261 Series
The 261 Series is a great replacement for standard large-diameter O-rings. This heavy duty static seal has a defined sealing lip manufactured from high-performance polyurethane. The square body profile prevents rolling in the groove, which is common with O-rings. The robust qualities of polyurethane allow the seal to be used without a backup ring. It is a substantial upgrade to
the traditional O-Ring and backup ring combination, which has been prone to rolling installation problems
Installation Drawing
Material Ranges
The 261 Series Mill-Duty Static 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 |
Temperature Ranges
MP03
°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
Speed
0.5 m/s (1.6 ft/sec)
Speed
0.5 m/s (1.6 ft/sec)
Pressure
1380 bar (20000 psi)
Pressure
1380 bar (20000 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 261 Series Mill-Duty Static Seal is used as the primary static seal in heavy duty steel and aluminum applications and severe conditions.
Benefits
- No twisting or rolling during installation
- Direct retrofit to O-Ring and backup ring designs
- Extrusion resistant
- Abrasion-resistant polyurethane
Applications
- Steel and aluminum processing
- Mobile Hydraulics
- Hydraulic Cylinder Rebuild
- Agricultural Hydraulics
- Construction Equipment
