The CR Oil Seal 2.938x3.623x0.375 CRW1 NBR is designed for industrial rotary shaft applications requiring reliable lubricant retention within a compact shaft-and-housing assembly.

Installed between the rotating shaft and stationary housing, the sealing lip maintains controlled radial contact with the shaft surface. This helps reduce leakage of oil or compatible grease from bearing housings, gearboxes, pumps, transmissions, and other rotating machinery.

The CRW1 Profile is generally recognized as a single-primary-lip radial shaft seal with a garter spring and metal-reinforced outer construction. Unlike CR profiles with an auxiliary exclusion lip, CRW1 is typically supplied without a separate dust lip.

Because CR and Chicago Rawhide profile details may vary according to production series, part number, and manufacturing period, the exact lip geometry, case treatment, spring arrangement, and installation direction should be compared with the original seal or technical drawing before replacement.

Manufactured from NBR (Nitrile Butadiene Rubber), the sealing element is generally compatible with:

• Mineral oils
• Gear oils
• Hydraulic oils
• Bearing grease
• Petroleum-based lubricants
• General industrial lubricating fluids

NBR provides good resistance to petroleum-based oils, grease, wear, and abrasion under normal industrial conditions. Compatibility should be confirmed before use with aggressive chemicals, high continuous temperatures, ozone-rich environments, or specialized synthetic lubricants.

The inch dimensions correspond approximately to:

Shaft diameter: 2.938 inches or 74.63 mm

Housing diameter: 3.623 inches or 92.02 mm

Seal width: 0.375 inch or 9.53 mm

The relatively small difference between the shaft and housing diameters creates a compact radial seal section. The specific dimensions suggest that this seal may be intended for a dedicated bearing housing, gearbox, transmission, pump, or OEM machine assembly.

⚙️ Applications

• Industrial gearboxes
• Bearing housings
• Industrial pumps
• Mechanical transmissions
• Electric motors
• Agricultural machinery
• Construction equipment
• Conveyor drive assemblies
• Power transmission systems
• OEM rotating machinery

🎯 Benefits

✔ Helps retain oil or compatible grease

✔ Spring-loaded primary sealing lip

✔ Oil-resistant NBR sealing material

✔ Compact radial seal cross-section

✔ Suitable for inch-size shaft assemblies

✔ Good resistance to wear and abrasion

✔ Helps protect bearings and internal components

✔ Suitable for repair and overhaul work

✔ OEM replacement ready when dimensions and profile match

🧠 Technical Insight

• CRW1 Radial Shaft Seal Profile
• Single Primary Sealing Lip
• Garter-Spring Lip Loading
• Metal-Reinforced Outer Case
• NBR Sealing Material
• Low-Pressure Lubricant Retention
• Approximately 74.63 mm Shaft Diameter
• Profile and Installation Direction Must Be Verified

✅ Key Features

• CR / Chicago Rawhide Reference
• CRW1 Profile
• Single-Lip Rotary Shaft Seal
• Oil-Resistant NBR Material
• Metal-Reinforced Construction
• Inch-Size Industrial Dimensions
• Industrial Replacement Seal
• OEM Cross-Reference Ready

📊 Specifications

Brand: CR / Chicago Rawhide

Model: CRW1

Size: 2.938 × 3.623 × 0.375 inch

Metric Equivalent: Approximately 74.63 × 92.02 × 9.53 mm

Type: Single-Lip Rotary Shaft Oil Seal

Material: NBR (Nitrile Butadiene Rubber)

Profile: CRW1

Construction: Metal-Reinforced Radial Shaft Seal

Lip Design: Spring-loaded primary sealing lip

Dust Lip: Typically none; verify against the original seal

Spring Type: Garter spring

Shaft Diameter (ID): 2.938 inches / approximately 74.63 mm

Housing Diameter (OD): 3.623 inches / approximately 92.02 mm

Width: 0.375 inch / approximately 9.53 mm

Pressure Capability: Low-pressure rotary shaft-sealing service unless otherwise specified

Lubrication: Oil and compatible grease

Temperature Range: Typically approximately -30°C to +100°C for standard NBR; verify the actual compound and operating conditions

Application Class: Industrial Bearing and Rotating Equipment

Standard: Inch-Size Industrial Radial Shaft Seal

🔁 Equivalent

Suitable replacement for compatible:

• CR CRW1 Rotary Shaft Seal
• Chicago Rawhide CRW1 Oil Seal
• 2.938x3.623x0.375 Oil Seal
• 74.63x92.02x9.53 Rotary Seal
• Single-Lip NBR Oil Seal
• Bearing Housing Oil Seal
• Industrial Gearbox Shaft Seal
• Pump Shaft Oil Seal
• Transmission Shaft Seal
• OEM CRW1 Shaft Seal

The same dimensions alone do not guarantee interchangeability. The replacement must match the original CRW1 cross-section, lip orientation, spring arrangement, outside-case design, shaft interference, and material compound.

(Always verify dimensions, CRW1 profile geometry, lip direction, spring condition, shaft and housing condition, lubricant compatibility, rotational speed, temperature, and operating conditions before ordering.)

📦 Availability

✅ In Stock

🚚 Fast Delivery Available

🌎 Worldwide Shipping Available

📦 MOQ: 1 Piece

🏭 Suitable for gearbox overhaul, bearing-housing maintenance, pump repair, motor servicing, transmission repair, agricultural machinery maintenance, and compatible 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