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Polyurethane U-Seal, 2.63 Inch OD, 2.00 Inch ID, 0.50 Inch Height
Brand
Hercules Sealing Products
Brand
Hercules Sealing Products
Supplier Part Number
U31-2.00-50B
Alternate Part Numbers
Alternate Part Number
C1DQ11
Does the height being bigger than the cross-section actually matter for how this seal performs in a cylinder?
Question by: Freddie P on Sep 23, 2025, 6:33 PM
For tight axial spaces, that proportion makes a real difference. When height runs greater than cross-section, the seal gives you more contact length along the bore wall without needing extra radial room to do it. That beveled lip also helps break the fluid film cleanly on the return stroke, which keeps leakage from sneaking past over time. In a compact cylinder where you can't afford to give up bore space but still need solid sealing up to 6,000 PSI, that geometry earns its keep.
Answer by: Customer Support on Sep 25, 2025, 6:05 AM
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