U250-1.250-250B Polyurethane Symmetric Hydraulic U-Cup 1-1/4" ID X 1-3/4" OD X 1/4" HT

Built from high-performance polyurethane (92 durometer, Disogrin AU 9250), this seal delivers excellent wear resistance, strength, and long service life. The natural polyurethane material outperforms standard rubber seals in demanding hydraulic and pneumatic environments.

Get a tight, reliable seal that holds up under pressure and keeps your equipment running longer. The U250-1.250-250B symmetric U-Cup is designed to seal in both directions, helping prevent leaks, reduce downtime, and improve overall system efficiency.

Operating Temperature

Operating temperature: -40° to +225°F (–40° to +107°C)

This polyurethane compound is engineered for durability, abrasion resistance, and consistent sealing performance under load.

Material & Performance Details:

• Compound: Polyurethane (Disogrin AU 9250)
• Durometer: 92 Shore A
• Color: Natural
• Excellent resistance to:
  • Hydraulic oils
  • Mineral oils
  • Abrasion and wear
  • Compression set
• Limited capability with:
  • Water-based fluids
  • Mild chemicals
• Not compatible with:
  • Strong acids
  • Strong bases
  • High-temperature steam

Sizes & Measurements

• Dimensions: 1-1/4" ID X 1-3/4" OD X 1/4" HT
• Actual: 1.250" ID X 1.750" OD X 0.250" HT
• Metric: 31.75mm ID X 44.45mm OD X 6.30mm HT
• Cross Section (CS): 6.30mm (0.250")
• Inside Diameter (ID): 31.75mm (1.250")
• Outside Diameter (OD): 44.45mm (1.750")
• Part Number: U250-1.250-250B
• Profile: SYM-005
• Material Code: 92 AU 9250
• Cross Reference: SYM-005, Symmetric U-Cup 005 Series, Disogrin AU 9250

Applications & Use Cases

This symmetric U-Cup is ideal for both rod and piston sealing where pressure can come from either direction. It is commonly used in hydraulic cylinders, pneumatic systems, and mobile equipment where durability and long service life are required.

Typical applications include:

• Hydraulic cylinders
• Pneumatic actuators
• Construction and agricultural equipment
• Material handling systems
• Industrial machinery

Key Specifications

• Material: Polyurethane (AU 9250)
• Durometer: 92A
• Color: Natural
• Profile: Symmetric U-Cup (SYM-005)
• Temperature Range: -40°F to +225°F (-40°C to +107°C)
• Pressure Rating: Medium to high pressure (application dependent)

Why Buy from The O-Ring Store LLC

We focus on getting you the right seal the first time so you avoid downtime, rework, and wasted cost.

• ISO9001:2015 certified processes for consistency and traceability
• USA-based inventory for fast, reliable delivery
• Same-day shipping on in-stock items
• Custom sizes and materials available
• Full lot traceability and documentation on request
• Real technical support from experienced sealing professionals
• Competitive pricing without sacrificing quality