The CR Oil Seal 2.250x3.350x0.688 M/R/L NBR is engineered for industrial applications requiring superior sealing performance, reliable lubricant retention, and enhanced protection against external contaminants.

The M/R/L Profile incorporates a reinforced metal outer case, primary sealing lip with garter spring, and an additional auxiliary dust lip. This dual-lip configuration significantly improves protection against dust, dirt, moisture, and abrasive particles while maintaining excellent oil sealing performance.

The primary sealing lip maintains constant radial pressure against the shaft, preventing lubricant leakage during continuous operation. The auxiliary lip acts as an additional barrier against environmental contamination, helping protect bearings, gears, and internal machine components from premature wear.

The reinforced metal case provides excellent dimensional stability and secure housing retention under vibration, shock loading, and heavy-duty operating conditions. This construction makes the seal suitable for industrial equipment operating in harsh environments.

Manufactured from premium NBR (Nitrile Butadiene Rubber), the sealing element offers excellent resistance to lubricating oils, hydraulic fluids, gear oils, grease, and petroleum-based lubricants. NBR provides outstanding wear resistance, flexibility, and cost-effective performance across a wide range of industrial applications.

With dimensions of 2.250 x 3.350 x 0.688 inch, this seal is commonly used in industrial pumps, gearboxes, agricultural machinery, speed reducers, conveyor systems, compressors, and imported equipment utilizing inch-size shaft systems.

⚙️ Applications

• Industrial gearboxes
• Industrial pumps
• Agricultural machinery
• Construction equipment
• Speed reducers
• Conveyor systems
• Air compressors
• Hydraulic equipment
• Power transmission systems
• OEM industrial machinery

🎯 Benefits

✔ Excellent oil retention

✔ Dual-lip contamination protection

✔ Prevent dust and moisture ingress

✔ Extend bearing and shaft life

✔ Reduce lubricant leakage

✔ Lower maintenance costs

✔ Reduce machine downtime

✔ Improve equipment reliability

✔ Suitable for harsh operating environments

🧠 Technical Insight

• M/R/L Triple Protection Design
• Reinforced metal case construction
• Spring-loaded primary sealing lip
• Auxiliary dust exclusion lip
• Excellent dimensional stability
• Suitable for oil and grease lubrication systems
• NBR provides superior oil resistance
• Designed for heavy-duty industrial applications

✅ Key Features

• CR Industrial Quality
• M/R/L Heavy Duty Design
• Dual Lip Protection
• Reinforced Metal Case
• Premium NBR Material
• Spring Loaded Sealing Lip
• OEM Replacement Ready
• Long Service Life

📊 Specifications

Brand: CR (Chicago Rawhide)

Model: M/R/L

Size: 2.250 x 3.350 x 0.688 inch

Type: Heavy Duty Rotary Shaft Oil Seal

Material: NBR (Nitrile Rubber)

Construction: Reinforced Metal Case

Lip Design: Primary Lip + Auxiliary Dust Lip

Spring Type: Garter Spring

Shaft Diameter (ID): 2.250 inch

Housing Diameter (OD): 3.350 inch

Width: 0.688 inch

Lubrication: Oil & Grease

Application Class: Heavy Industrial Service

Standard: Inch Size Oil Seal

🔁 Equivalent

Suitable replacement for:

• SKF Industrial Oil Seal
• CR Chicago Rawhide Seal
• National Oil Seal
• NOK Oil Seal
• CFW Rotary Shaft Seal
• KACO Oil Seal
• DICHTOMATIK Oil Seal
• TRELLEBORG Rotary Seal

(Always verify dimensions and seal profile before ordering.)

📦 Availability

✅ In Stock

🚚 Fast Delivery Available

🌎 Worldwide Shipping Available

📦 MOQ: 1 Piece

🏭 Suitable for industrial maintenance, machinery overhaul, OEM replacement, and repair workshop applications

📲 Contact via LINE ID: dusitrea

📧 Email: sales@seal4go.com

💬 Technical support available before ordering

🔍 Assistance available for cross-reference and equivalent part identification