Characteristics
Series 11 Flange Seals are designed for use on all Hydraulic Flanged Tube, Pipe
and Hose Connections, 4 Bolt Split Flange Type, as detailed in SAE Standard
1518c. They provide a direct replacement for the O-rings without any
modifications of the existing grooves.
Special sizes of Flange Seals may be economically produced for a variety of
other applications, including manifold mounted pumps, stack valves and similar
static hydraulic applications.
Flange Seals are a one piece, dual durometer static seal that consists of an
outer lamina of Unithane 395A polyurethane. This material provides maximum
extrusion resistance for the inner sealing lamina of Unithane 157A polyurethane
which exhibits extremely low compression set and has excellent sealing
characteristics. Refer to Technical Bulletin US 96 for specific details on all
Unithane materials.
Flange Seals are suitable for use in standard hydraulic fluids in a temperature
range of -40 degrees F to +195 degrees F and 0 to 3000 P.S.I.
This unique combination of an outer extrusion resistant lamina bonded to an
inner pressure responsive sealing lamina provides improved sealing performance
and longer service life than normally can be obtained by O-rings or other more
expensive devices.
Material
- Outer Lamina: Unithane 395A liquid cast Polyurethane, Duro 95A.
- Inner Lamina: Unithane 157A liquid cast Polyurethane, Duro 57A.
- Fluid Compatibility: See Material Specification: Technical Bulletin US- 96
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