Metric TB Rubber Oil Seal
Product Overview
Metric TB Rubber Oil Seals are engineered according to ISO metric shaft and housing dimensions (ISO 6194 / DIN 3760 equivalent dimensions) and are widely used in industrial machinery, automotive systems, hydraulic equipment, agricultural machinery, pumps, gearboxes, and electric motors. Featuring a rubber-covered outer diameter and a single sealing lip with a spring-loaded design, the TB profile provides reliable lubricant retention while preventing dust, moisture, and contaminants from entering rotating equipment.
For distributors, industrial suppliers, and OEM manufacturers, choosing a reliable Metric TB oil seal means fewer warranty claims, reduced inventory complexity, and stable product quality across every production batch.
What Is a Metric TB Rubber Oil Seal?
A Metric TB Rubber Oil Seal is a radial shaft seal manufactured to metric dimensional standards. The TB design includes:
Rubber-coated outer diameter for improved housing sealing
Primary sealing lip with garter spring
Auxiliary dust lip for external contamination protection
Reinforced steel insert for structural stability
Precision molded elastomer sealing element
Compared with single lip oil seals, the additional dust lip significantly improves protection in dusty and wet operating environments, helping extend bearing and lubricant service life.
Key Features & Benefits
Dual Lip Protection Against Oil Leakage and Contamination
The TB profile incorporates both a primary sealing lip and an auxiliary dust lip. The primary lip maintains constant radial sealing force through a precision garter spring, while the secondary lip prevents dirt, dust, sand, water splash, and other contaminants from reaching the sealing surface.
• Benefits for buyers: Lower lubricant loss, reduced bearing failures, longer equipment maintenance intervals, and better reliability in dirty operating environments.
Rubber Covered Outside Diameter Improves Static Sealing
Unlike metal case oil seals, Metric TB oil seals feature a rubber-coated outer diameter. The rubber coating compensates for minor housing imperfections while providing excellent static sealing between the housing bore and seal outside diameter. This design helps reduce installation leakage without requiring additional sealing compounds in many applications.
Stable Sealing Force During Long-Term Operation
Each seal incorporates a precision garter spring that continuously applies radial force to the shaft. As the sealing lip naturally wears over time, the spring compensates for wear and helps maintain consistent sealing pressure, minimizing leakage throughout the seal's service life.
High Rotational Stability
The optimized lip geometry minimizes friction while maintaining effective contact pressure. Lower friction results in reduced operating temperature, less shaft wear, lower energy loss, and longer seal life, making Metric TB seals suitable for continuous-duty rotating equipment.
Multiple Rubber Materials for Different Operating Conditions
Material selection has a significant impact on sealing performance. Common material options include:
• NBR: -40°C to +120°C - Industrial machinery, gearboxes, pumps.
• FKM (Viton equivalent): -20°C to +200°C - High-temperature equipment, chemicals.
• HNBR: -40°C to +150°C - Heavy-duty industrial equipment.
• Silicone: -60°C to +200°C - Low-temperature and food-related equipment (where applicable).
• ACM: -30°C to +150°C - Automotive transmission systems.
Providing multiple material options allows distributors to serve a wider range of industries without changing seal design.
Technical Advantages That Matter to Wholesale Buyers
Manufactured to Metric Standards: All Metric TB oil seals are produced according to internationally recognized metric dimensions, allowing easy replacement of seals used in ISO equipment, DIN machinery, European industrial equipment, and Asian manufacturing equipment. This improves compatibility while simplifying inventory management.
Precision Spring Control: The garter spring is manufactured with controlled spring tension. Proper spring force helps achieve stable sealing pressure, reduced uneven lip wear, and consistent performance between production batches-especially important for OEM customers requiring repeatable quality.
High Dimensional Accuracy: Critical dimensions including inner diameter, outer diameter, seal width, lip angle, and spring positioning are inspected during production to ensure proper shaft interference and housing fit. Consistent dimensional accuracy minimizes installation problems during assembly.
Strong Bonding Between Rubber and Metal: The rubber element is chemically bonded to the internal steel reinforcement during vulcanization. Strong rubber-to-metal adhesion prevents separation during installation, deformation under pressure, and structural instability during long-term operation.
Common Applications
Industrial Gearboxes: Prevent lubricant leakage while protecting bearings from dust contamination.
Electric Motors: Maintain bearing lubrication and improve motor reliability.
Hydraulic Pumps: Prevent hydraulic oil leakage under continuous rotation.
Agricultural Machinery: Protect rotating shafts exposed to mud, dust, and moisture.
Construction Equipment: Provide reliable sealing under vibration and heavy loads.
Automotive Components: Suitable for transmissions, differentials, wheel hubs, and various rotating assemblies.
Air Compressors: Reduce lubricant loss while extending bearing life.
Conveyor Systems: Maintain continuous sealing performance during long operating cycles.
Available Customization Options
We support OEM and wholesale customization services, including:
Metric and non-standard dimensions
NBR, FKM, HNBR, ACM, and Silicone materials
Spring material selection
Different lip structures
Color customization
Customer logo laser marking
Customized packaging (Barcode labels, bulk industrial packaging, retail packaging, private label production)
Manufacturing Advantages
Our production process focuses on dimensional consistency and batch stability. Key manufacturing capabilities include:
These controls help ensure every production batch delivers consistent sealing performance.
Quality Control Process
Every production batch undergoes multiple quality inspections, including:
Raw Material Inspection: Rubber hardness, tensile properties, material identification, and compound verification.
Dimensional Inspection: Inner diameter, outer diameter, width tolerance, and lip geometry.
Bonding Inspection: Verification of rubber-to-metal adhesion after vulcanization.
Spring Inspection: Spring size, preload, and positioning checked before assembly.
Appearance Inspection: Inspection for flash, surface defects, air bubbles, cracks, and lip damage.
Packaging Inspection: Final verification of quantity, labeling, and product identification before shipment.
Why Wholesale Buyers Choose Metric TB Oil Seals
Broad Size Availability: Large metric size coverage helps distributors consolidate purchasing from one supplier.
Consistent Batch Quality: Stable manufacturing processes reduce quality variation between orders.
Flexible OEM Production: Support for customized materials, packaging, and branding.
Lower Inventory Risk: Metric standard dimensions allow one product series to serve multiple equipment manufacturers.
Reliable Global Shipping: Standard export packaging protects products during international transportation while supporting bulk wholesale distribution.
Frequently Asked Questions
Q: What is the difference between TB and TC oil seals?
A: TB oil seals typically feature a rubber-covered outer diameter with a dual-lip design for improved static sealing and contamination protection. TC oil seals also use dual lips but may differ in case construction depending on the manufacturer's design standard. The appropriate type depends on housing design and application requirements.
Q: Which rubber material is most commonly used?
A: NBR is the most widely used material due to its excellent resistance to mineral oils, wear, and cost-effectiveness. FKM is recommended for higher temperatures and more aggressive chemical environments.
Q: Can you manufacture non-standard metric sizes?
A: Yes. We support custom dimensions based on customer drawings, samples, or technical specifications for OEM and replacement applications.
Q: Do you provide customized packaging?
A: Yes. We offer bulk cartons, branded boxes, barcode labels, OEM packaging, and private label solutions tailored to wholesale distribution requirements.
Q: How do I choose the correct oil seal size?
A: The correct size is determined by the shaft diameter, housing bore diameter, and seal width. Providing these three dimensions or the equipment model allows us to recommend a suitable Metric TB oil seal.
Hot Tags: metric tb rubber oil seal, China metric tb rubber oil seal manufacturers, suppliers, factory, Automotive Rubber Gasket, Industrial V Ring, OEM Rubber Gasket, Single Lip High Speed Oil Seal, VA Type V Ring, VB Rubber Oil Seal
You Might Also Like
Send Inquiry