U-Seal, 1-3/8"X1-5/8"X3/16"

U-Seal, 1-3/8"X1-5/8"X3/16"

The U12-1.37-18D Style 800 U-Seal is a urethane rod/piston seal molded from tough, abrasion-resistant 95A polyurethane for dependable hydraulic sealing performance. Designed with a four-lobed expander ring, this seal energizes the sealing lips even at zero pressure to help prevent “weeping” when systems are idle. Built to handle pressures up to 5,000 PSI, it delivers long-lasting performance in demanding hydraulic applications—because a seal should hold strong whether the system is moving or standing still.

Country of Origin
Varies by production batch

Key Features / Specifications

• Part Number: U12-1.37-18D
• Series / Style: Style 800 U-Seal
• Material: 95A Polyurethane (Urethane)
• Seal Type: U-Seal with Four-Lobed Expander Ring
• Nominal Inside Diameter (Rod): 1-3/8" (1.375")
• Nominal Outside Diameter (Bore): 1-5/8" (1.625")
• Nominal Height: 3/16"
• Cross Section: 1/8"
• Groove Diameter (H): 1.375"
• Groove Width (D): 0.206"
• Housing Diameter (G): 1.625"
• Piston Diameter (I): 1.624"
• Throat Diameter (F): 1.376"
• Temperature Range: -65°F to +220°F
• Pressure Range: 0 to 5,000 PSI
• Maximum Speed: 3 ft/sec
• Weight: 0.004608 lb

Ideal For

• Hydraulic cylinders requiring rod or piston sealing
• Applications where abrasion resistance and durability are critical
• Systems operating up to 5,000 PSI
• Equipment exposed to wide temperature ranges
• Installations where zero-pressure sealing helps prevent idle leakage