The DICHTA Oil Seal 128x150x13 AS NBR is designed for industrial rotary shaft applications requiring lubricant retention around a 128 mm shaft within a 150 mm housing bore.

Installed between the rotating shaft and stationary housing, the sealing element maintains controlled contact with the shaft surface to help reduce leakage of compatible oil or grease while supporting protection of bearings, gears, pumps, transmissions, and other internal rotating components.

The product is identified by the DICHTA manufacturer designation AS. Because profile codes may vary by manufacturer and series, the exact sealing-lip geometry, number of lips, dust-exclusion arrangement, outside-case construction, internal reinforcement, spring configuration, lip orientation, and installation direction should be verified against the original DICHTA seal, technical drawing, or equipment specification before replacement.

Manufactured from NBR (Nitrile Butadiene Rubber), the sealing element is generally suitable for:

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

NBR generally provides good resistance to petroleum-based oils, grease, abrasion, and mechanical wear under normal industrial conditions. Compatibility should be verified before use with aggressive chemicals, certain fuels, specialized synthetic lubricants, ozone-rich environments, or continuous elevated-temperature operation.

The dimensions are:

Shaft diameter: 128 mm / approximately 5.039 in

Housing diameter: 150 mm / approximately 5.906 in

Seal width: 13 mm / approximately 0.512 in

The 128 × 150 × 13 mm configuration is suitable for large bearing housings, industrial gearboxes, pumps, transmissions, drive systems, and machinery using a metric rotary shaft seal.

Because of the relatively large shaft diameter, sealing performance is strongly influenced by shaft finish, shaft hardness, alignment, concentricity, radial runout, installation depth, and correct lubrication at the sealing interface.

⚙️ Applications

• Industrial gearboxes
• Large bearing housings
• Industrial pumps
• Electric motor assemblies
• Mechanical transmissions
• Agricultural machinery
• Construction equipment
• Conveyor drive systems
• General rotating machinery
• OEM industrial equipment

🎯 Benefits

✔ Helps retain compatible oil or grease

✔ Protects bearings and internal components

✔ Oil-resistant NBR sealing material

✔ Suitable for 128 mm shaft assemblies

✔ Manufacturer-specific DICHTA AS profile

✔ Good resistance to abrasion and wear

✔ Suitable for large rotating equipment

✔ Suitable for maintenance and overhaul work

✔ Replacement ready when dimensions and AS profile match

🧠 Technical Insight

• DICHTA AS Seal Reference
• Large Metric Rotary Shaft Seal
• NBR Sealing Material
• Manufacturer-Specific AS Profile
• Radial Shaft-Sealing Function
• Low-Pressure Lubricant Retention
• 128 mm Shaft Diameter
• Exact AS Cross-Section Must Be Verified

✅ Key Features

• DICHTA Industrial Quality
• AS Profile Reference
• Oil-Resistant NBR Material
• Metric Construction
• 128x150x13 Dimensions
• Suitable for Compatible Oil and Grease
• Industrial Replacement Seal
• Cross-Reference Support Available

📊 Specifications

Brand: DICHTA

Model / Profile: AS

Size: 128 × 150 × 13 mm

Inch Equivalent: Approximately 5.039 × 5.906 × 0.512 in

Type: Industrial Rotary Shaft Oil Seal

Material: NBR (Nitrile Butadiene Rubber)

Profile: AS

Construction: Manufacturer-Specific DICHTA AS Rotary Shaft-Seal Construction

Lip Design: AS profile; verify exact sealing-lip geometry, number of lips, and orientation against the original seal or technical drawing

Dust Lip: Verify from the actual AS cross-section

Spring Type: Verify from the actual seal construction

Shaft Diameter (ID): 128 mm

Housing Diameter (OD): 150 mm

Width: 13 mm

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

Lubrication: Compatible oil and grease

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

Speed Consideration: Permissible speed depends on shaft diameter, surface finish, lubrication, temperature, alignment, concentricity, runout, lip loading, and actual NBR compound

Installation Consideration: Confirm shaft finish, shaft hardness, housing-bore condition, installation depth, lip direction, concentricity, radial runout, and protection from sharp shaft edges before fitting

Application Class: Large Industrial Bearing and Rotating Equipment

Standard: Metric Specialized Industrial Seal

🔁 Equivalent

Suitable replacement or cross-reference candidate for compatible:

• DICHTA AS NBR Rotary Shaft Seal
• DICHTA 128x150x13 Oil Seal
• 128 mm Shaft Oil Seal
• 128x150x13 NBR Oil Seal
• Metric NBR Rotary Shaft Seal
• Industrial Bearing Housing Seal
• Industrial Gearbox Shaft Seal
• Industrial Pump Shaft Seal
• OEM AS Profile Oil Seal
• Large Industrial NBR Shaft Seal

The same dimensions alone do not guarantee interchangeability. The replacement must also match the original AS cross-section, sealing-lip geometry, lip orientation, outside-case construction, internal reinforcement, spring configuration, installation direction, material compound, and operating requirements.

(Always verify dimensions, AS-profile geometry, lip direction, shaft finish, shaft hardness, housing condition, installation depth, lubricant compatibility, rotational speed, temperature, alignment, concentricity, runout, pressure, and operating conditions before ordering.)

📦 Availability

✅ In Stock

🚚 Fast Delivery Available

🌎 Worldwide Shipping Available

📦 MOQ: 1 Piece

🏭 Suitable for gearbox overhaul, large bearing-housing maintenance, industrial pump repair, motor servicing, transmission maintenance, agricultural-machinery repair, construction-equipment maintenance, conveyor-drive servicing, 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