The OEM Cartridge Seal 2.250x3.625x1.125 M/R NBR is engineered for rotating equipment that requires a pre-assembled sealing solution with high reliability and simplified installation. It is widely used in industrial pumps, gearboxes, hydraulic systems, compressors, mixers, power transmission equipment, and OEM machinery.

The M/R Cartridge Profile combines a reinforced metal case, a precision spring-loaded primary sealing lip, and an integrated cartridge assembly. The cartridge construction helps maintain proper alignment between the sealing element and the shaft while simplifying installation and reducing the possibility of seal damage during assembly.

The integrated garter spring continuously maintains sealing pressure against the rotating shaft, minimizing lubricant leakage while protecting bearings, shafts, and internal rotating components from contamination and premature wear. The robust cartridge housing improves rigidity and ensures stable sealing performance during continuous industrial operation.

Manufactured from premium NBR (Nitrile Butadiene Rubber), the sealing element offers excellent resistance to:

• Mineral oils
• Hydraulic oils
• Gear oils
• Lubricating grease
• Petroleum-based lubricants

NBR provides excellent abrasion resistance, flexibility, and durability for general industrial applications. Typical operating capability is up to 0.5 Bar, with operating temperatures ranging from -40°C to +100°C, depending on lubricant compatibility, shaft speed, and operating conditions.

With dimensions of 2.250 × 3.625 × 1.125 inch, this cartridge seal is commonly installed in industrial pumps, heavy-duty gearboxes, hydraulic equipment, compressors, mixers, conveyor systems, power transmission equipment, and OEM rotating machinery utilizing inch-size shaft systems.

⚙️ Applications

• Industrial pumps
• Hydraulic equipment
• Industrial gearboxes
• Air compressors
• Mixers and agitators
• Power transmission equipment
• Conveyor systems
• Heavy industrial machinery
• Rotating process equipment
• OEM machinery

🎯 Benefits

✔ Cartridge design for easier installation

✔ Excellent oil retention

✔ Reliable shaft protection

✔ Stable sealing performance

✔ Protects bearings and rotating components

✔ Heavy-duty industrial construction

✔ Long service life

✔ OEM quality replacement

✔ Reduces maintenance costs

🧠 Technical Insight

• M/R Cartridge Seal Design
• Reinforced Metal Cartridge Housing
• Spring Loaded Main Lip
• Premium NBR Material
• Oil & Grease Compatible
• Excellent Shaft Protection
• Designed for Continuous Industrial Operation
• Heavy Duty Cartridge Sealing Solution

✅ Key Features

• OEM Industrial Quality
• M/R Cartridge Profile
• Reinforced Metal Construction
• Premium NBR Material
• Spring Loaded Main Lip
• Cartridge Assembly Design
• OEM Replacement Ready
• Long Service Life

📊 Specifications

Brand: OEM

Model: M/R Cartridge

Size: 2.250 × 3.625 × 1.125 inch

Type: Cartridge Rotary Shaft Seal

Material: NBR (Nitrile Butadiene Rubber)

Profile: M/R

Construction: Reinforced Metal Cartridge Assembly

Lip Design: Spring Loaded Main Lip

Dust Lip: None

Spring Type: Garter Spring

Shaft Diameter (ID): 2.250 inch

Housing Diameter (OD): 3.625 inch

Width: 1.125 inch

Pressure Capability: Up to 0.5 Bar

Lubrication: Oil & Grease

Temperature Range: -40°C to +100°C

Application Class: Heavy Industrial Service

Standard: Inch Size Cartridge Seal

🔁 Equivalent

Suitable replacement for:

• SKF Cartridge Seal
• CR Chicago Rawhide Cartridge Seal
• National Cartridge Seal
• Freudenberg Cartridge Seal
• NOK Cartridge Seal
• CFW Cartridge Seal
• KACO Cartridge Seal
• DICHTOMATIK Cartridge Seal
• Garlock Cartridge Seal
• OEM Cartridge Rotary Shaft Seal

(Always verify dimensions, cartridge configuration, and seal profile before ordering.)

📦 Availability

✅ In Stock

🚚 Fast Delivery Available

🌎 Worldwide Shipping Available

📦 MOQ: 1 Piece

🏭 Suitable for industrial maintenance, pump overhaul, gearbox repair, compressor service, hydraulic equipment maintenance, and OEM replacement applications.

📲 Contact via LINE ID: dusitrea

📧 Email: sales@seal4go.com

💬 Technical support available before ordering

🔍 Assistance available for cross-reference and equivalent part identification