The STEFA/TRELLEBORG Oil Seal 1.936x3.146x0.875 M/F Fabric is designed for industrial rotating equipment requiring robust construction, stable housing installation, and dependable lubricant retention.

The manufacturer-specific M/F Profile combines an industrial fabric sealing element with a metal supporting structure. The metal case helps maintain dimensional stability, provides mechanical reinforcement, and supports secure installation within the housing. The fabric sealing element creates controlled contact around the rotating shaft to help reduce lubricant leakage and limit the entry of external contamination.

Fabric seals are commonly selected for older machinery and demanding industrial applications where structural strength, resistance to deformation, and compatibility with an original equipment sealing arrangement are important. Depending on the production specification, the fabric element may be impregnated or treated to improve resistance to oil, grease, abrasion, moisture, and environmental contamination.

Because M/F is a manufacturer-specific profile designation, the exact position of the metal case, fabric element, internal reinforcement, sealing geometry, number of sealing surfaces, installation direction, and lubrication arrangement should be compared with the original seal or technical drawing before replacement.

This seal is generally suitable for compatible applications involving:

• Bearing grease
• Mineral oils
• Gear oils
• Industrial lubricating oils
• Petroleum-based lubricants
• Compatible grease-lubricated systems

The performance of a fabric seal depends on the fabric composition, impregnation treatment, lubricant type, shaft speed, temperature, shaft condition, moisture exposure, and operating environment. These factors should be verified before installation.

The inch dimensions correspond approximately to:

Shaft diameter: 1.936 inches or 49.17 mm

Housing diameter: 3.146 inches or 79.91 mm

Seal width: 0.875 inch or 22.23 mm

The wide 0.875-inch axial section indicates that this seal is intended for a dedicated industrial housing rather than a conventional narrow oil-seal groove. Accurate dimensional measurement and full M/F profile verification are essential before installation.

⚙️ Applications

• Industrial gearboxes
• Grease-lubricated bearing housings
• Mechanical transmissions
• Agricultural machinery
• Construction equipment
• Mining and quarry machinery
• Conveyor drive assemblies
• Power transmission systems
• Legacy industrial machinery
• OEM rotating equipment

🎯 Benefits

✔ Heavy-duty metal-cased construction

✔ Industrial fabric sealing element

✔ Helps retain grease and compatible oils

✔ Supports stable installation in dedicated housings

✔ Good resistance to mechanical deformation

✔ Suitable for demanding industrial environments

✔ Appropriate for maintenance and overhaul work

✔ Ideal for legacy-equipment restoration

✔ OEM replacement ready when dimensions and profile match

🧠 Technical Insight

• STEFA/TRELLEBORG M/F Seal Reference
• Metal Case + Fabric Sealing Construction
• Wide 0.875-Inch Axial Section
• Industrial Rotary Shaft-Sealing Function
• Low-Pressure Lubricant Retention
• Suitable for Compatible Oil and Grease
• Approximately 49.17 mm Shaft Diameter
• Full M/F Cross-Section Verification Required

✅ Key Features

• STEFA/TRELLEBORG Industrial Quality
• M/F Fabric Profile
• Rigid Metal-Cased Construction
• Industrial Fabric Sealing Element
• Heavy-Duty Inch-Size Design
• Suitable for Industrial Maintenance
• Specialized OEM Replacement Seal
• Cross-Reference Assistance Available

📊 Specifications

Brand: STEFA / TRELLEBORG

Model: M/F

Size: 1.936 × 3.146 × 0.875 inch

Metric Equivalent: Approximately 49.17 × 79.91 × 22.23 mm

Type: Heavy-Duty Fabric Rotary Shaft Seal

Sealing Material: Industrial Fabric Sealing Material

Case Material: Metal

Profile: M/F

Construction: Manufacturer-Specific Metal-Cased Fabric Seal Construction

Lip Design: Fabric sealing geometry; verify against the original seal

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

Spring Type: None unless otherwise shown in the original construction

Shaft Diameter (ID): 1.936 inches / approximately 49.17 mm

Housing Diameter (OD): 3.146 inches / approximately 79.91 mm

Width: 0.875 inch / approximately 22.23 mm

Pressure Capability: Low-pressure lubricant-retention service unless otherwise specified by the equipment manufacturer

Lubrication: Grease, mineral oil, gear oil, and compatible industrial lubricants

Temperature Range: Depends on the fabric composition, impregnation treatment, lubricant, shaft speed, and operating conditions

Application Class: Heavy-Duty Industrial and Legacy Equipment

Standard: Inch-Size Specialized OEM Seal

🔁 Equivalent

Suitable replacement for compatible:

• STEFA M/F Fabric Rotary Shaft Seal
• TRELLEBORG M/F Fabric Seal
• 1.936x3.146x0.875 Fabric Oil Seal
• 49.17x79.91x22.23 Rotary Seal
• Metal-Cased Fabric Shaft Seal
• Grease-Lubricated Bearing Housing Seal
• Industrial Fabric Oil Seal
• Heavy-Duty Gearbox Seal
• OEM M/F Shaft Seal
• Legacy Equipment Fabric Seal

The same dimensions alone do not guarantee interchangeability. The replacement must match the original M/F cross-section, fabric composition, metal-case configuration, sealing geometry, internal reinforcement, installation direction, and lubricant compatibility.

(Always verify dimensions, M/F profile geometry, fabric construction, impregnation treatment, 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, grease-lubricated bearing-housing maintenance, transmission servicing, agricultural and construction machinery repair, mining equipment maintenance, legacy machinery 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