The OEM Oil Seal 3.188x4.457x0.531 M/F FABRIC is designed for rotary shaft applications around a 3.188-inch shaft within a nominal 4.457-inch housing bore.

Unlike a conventional elastomer oil seal, this product uses an industrial fabric sealing material combined with a metal case/support structure. Fabric seals are commonly associated with older industrial equipment and specialized applications where the original machinery was specifically designed around this sealing technology.

The M/F designation is manufacturer-specific. It indicates a metal-supported fabric-type arrangement, but the exact internal geometry should not be inferred from the code alone. The precise:

• Fabric sealing-element geometry
• Number of sealing elements
• Lip or contact-edge configuration
• Metal support arrangement
• Outside-case construction
• Internal reinforcement
• Installation direction
• Sealing orientation

should be verified against the original OEM seal, equipment drawing, or cross-section before replacement.

No spring should be assumed unless the actual M/F construction or OEM documentation specifically confirms one.

Typical lubricated service environments may include:

• Mineral oils
• Gear oils
• Bearing oils
• Bearing grease
• Petroleum-based industrial lubricants
• General lubricated rotary shaft applications

The operating temperature and allowable shaft speed depend strongly on the fabric material, impregnation or treatment, lubricant, shaft surface, pressure, and equipment design. A fixed temperature limit should therefore not be assumed without material-specific data.

The inch dimensions convert approximately to:

Shaft diameter: 3.188 inches / 80.98 mm

Housing diameter: 4.457 inches / 113.21 mm

Seal width: 0.531 inch / 13.49 mm

Because this is a manufacturer-specific fabric seal, the complete M/F cross-section should be matched rather than selecting a replacement based only on nominal dimensions.

⚙️ Applications

• Industrial gearboxes
• Bearing housings
• Mechanical transmissions
• Industrial drive systems
• Agricultural machinery
• Construction machinery
• Conveyor drive assemblies
• Heavy mechanical equipment
• Legacy rotating machinery
• OEM equipment restoration

🎯 Benefits

✔ Industrial fabric sealing element

✔ Metal-supported construction

✔ Suitable for 3.188-inch shaft applications

✔ Useful for legacy machinery and older equipment

✔ Suitable for compatible oil and grease service

✔ Designed for specialized M/F seal arrangements

✔ Useful for gearbox and bearing-housing overhaul

✔ Suitable for repair and restoration projects

✔ Replacement candidate when the full M/F cross-section matches

🧠 Technical Insight

• OEM M/F Fabric Seal Reference
• Metal-Cased Fabric Shaft Seal
• Manufacturer-Specific M/F Profile
• 80.98 mm Shaft Diameter
• 113.21 mm Housing Diameter
• Lubricated Rotary Shaft Application
• Spring Not Assumed
• Exact M/F Cross-Section Must Be Verified

✅ Key Features

• OEM Industrial Seal
• M/F Profile Reference
• Industrial Fabric Sealing Material
• Metal Case / Support Structure
• Inch-Size Construction
• 3.188x4.457x0.531 Dimensions
• Legacy Equipment Replacement
• Cross-Reference Support Available

📊 Specifications

Brand: OEM

Model / Profile: M/F

Size: 3.188 × 4.457 × 0.531 inch

Metric Equivalent: Approximately 80.98 × 113.21 × 13.49 mm

Type: Industrial Fabric Rotary Shaft Seal

Material: Industrial Fabric Sealing Material

Profile: M/F

Construction: Manufacturer-Specific Fabric Sealing Element with Metal Case / Support

Lip Design: M/F profile; verify exact fabric sealing-edge geometry, number of sealing elements, and orientation against the original seal or drawing

Dust Lip: Verify from the actual M/F cross-section

Spring Type: No spring assumed; verify actual construction if spring assistance is required

Shaft Diameter (ID): 3.188 inches / approximately 80.98 mm

Housing Diameter (OD): 4.457 inches / approximately 113.21 mm

Width: 0.531 inch / approximately 13.49 mm

Pressure Capability: Primarily low-pressure rotary shaft-sealing service unless the specific OEM design states otherwise

Lubrication: Compatible oil or grease; verify with actual fabric material and treatment

Temperature Range: Material- and application-dependent; verify fabric composition, impregnation, lubricant, shaft speed, and operating conditions

Speed Consideration: Depends on fabric material, lubricant, shaft diameter, surface finish, temperature, pressure, alignment, concentricity, and runout

Installation Consideration: Verify housing condition, shaft surface finish and hardness, installation depth, M/F orientation, concentricity, runout, and complete seal cross-section before installation

Application Class: Industrial Bearing, Gearbox, Transmission, and Legacy Rotating Equipment

Standard: Inch-Size Specialized Fabric Shaft Seal

🔁 Equivalent

Suitable replacement or cross-reference candidate for compatible:

• OEM M/F Fabric Shaft Seal
• OEM 3.188x4.457x0.531 Oil Seal
• 80.98x113.21x13.49 Fabric Seal
• 3.188-Inch Shaft Fabric Seal
• Metal-Cased Fabric Oil Seal
• Industrial Fabric Bearing Seal
• Gearbox Fabric Shaft Seal
• Transmission Fabric Seal
• Legacy Equipment Shaft Seal
• OEM Fabric Rotary Seal

The same nominal dimensions alone do not guarantee interchangeability. A replacement must also match the original M/F cross-section, fabric material, sealing-edge geometry, metal support structure, outside-case construction, orientation, installation direction, lubricant compatibility, and operating requirements.

(Always verify dimensions, M/F construction, fabric material, complete cross-section, shaft finish, shaft hardness, housing condition, installation depth, lubricant compatibility, speed, temperature, concentricity, runout, pressure, and operating conditions before ordering.)

📦 Availability

✅ In Stock

🚚 Fast Delivery Available

🌎 Worldwide Shipping Available

📦 MOQ: 1 Piece

🏭 Suitable for gearbox overhaul, bearing-housing maintenance, transmission repair, agricultural machinery, industrial drives, conveyor systems, legacy-equipment restoration, 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