The OEM Cartridge Seal 3.125x4.562x1.375 M/R NBR is engineered for industrial applications requiring enhanced sealing reliability and robust protection against lubricant leakage and environmental contamination.

Unlike conventional oil seals, a Cartridge Seal incorporates an integrated sealing assembly designed to simplify installation while providing improved shaft protection and sealing efficiency. The cartridge design helps reduce installation errors and ensures consistent sealing performance throughout the equipment lifecycle.

The M/R Profile combines a reinforced metal case with a precision-engineered NBR sealing element that maintains effective contact with the shaft surface. This design effectively retains oil and grease while preventing dust, dirt, moisture, and abrasive particles from entering the system.

Manufactured from premium NBR (Nitrile Butadiene Rubber), the sealing element offers excellent resistance to mineral oils, hydraulic fluids, gear oils, grease, and petroleum-based lubricants. NBR is widely recognized for its durability, flexibility, and cost-effective performance in industrial sealing applications.

With dimensions of 3.125 x 4.562 x 1.375 inch, this cartridge seal is commonly used in industrial pumps, gearboxes, agitators, compressors, conveyors, heavy-duty rotating equipment, and OEM machinery utilizing inch-size shaft systems.

⚙️ Applications

• Industrial pumps
• Industrial gearboxes
• Agitators and mixers
• Compressors
• Power transmission equipment
• Conveyor systems
• Mining equipment
• Agricultural machinery
• Heavy industrial machinery
• OEM rotating equipment

🎯 Benefits

✔ Cartridge-style easy installation

✔ Excellent oil retention

✔ Enhanced contamination protection

✔ Protects shaft and bearing assemblies

✔ Reduces maintenance downtime

✔ Extends equipment life

✔ Reliable sealing performance

✔ Suitable for continuous-duty operation

✔ Long service life

🧠 Technical Insight

• Cartridge Seal Construction
• M/R Profile Design
• Reinforced Metal Housing
• Precision NBR Sealing Element
• Oil & Grease Lubrication Compatible
• Excellent Oil Resistance
• Contamination Exclusion Capability
• Designed for Industrial Rotating Equipment

✅ Key Features

• OEM Industrial Quality
• Cartridge Seal Assembly
• M/R Profile Design
• Reinforced Metal Construction
• Premium NBR Material
• Excellent Wear Resistance
• OEM Replacement Ready
• Long Service Life

📊 Specifications

Brand: OEM

Model: Cartridge Seal M/R

Size: 3.125 x 4.562 x 1.375 inch

Type: Cartridge Rotary Shaft Oil Seal

Material: NBR (Nitrile Rubber)

Profile: M/R

Construction: Cartridge Assembly with Metal Case

Shaft Diameter (ID): 3.125 inch

Housing Diameter (OD): 4.562 inch

Width: 1.375 inch

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
• Garlock Cartridge Seal
• Freudenberg Cartridge Seal
• KACO Cartridge Seal
• DICHTOMATIK Cartridge Seal
• OEM Rotary Shaft Cartridge Seal

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

📦 Availability

✅ In Stock

🚚 Fast Delivery Available

🌎 Worldwide Shipping Available

📦 MOQ: 1 Piece

🏭 Suitable for industrial maintenance, pump overhaul, gearbox repair, compressor maintenance, rotating equipment service, 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