Professional O-Ring and Oil Seal Manufacturer, Sealing Solution Supplier Since 2008.
VB Type External Skeleton Oil Seal for Rotating Shafts
Single Lip, Spring-Free Design for Light Dust Environments
Tailored for rotating shaft applications, this seal integrates a robust outer metal case with a flexible inner rubber body, paired with a single-lip, spring-free design that minimizes friction during operation—critical for reducing wear on low-speed components. It excels at grease sealing in light-dust environments, making it a go-to choice for low-speed bearings and equipment where dust intrusion is mild. Engineered for non-pressurized scenarios (max. pressure ~0.03MPa), it avoids leakage risks in low-stress setups.
Crafted from high-performance materials, it offers two reliable options: NBR for strong oil resistance (ideal for standard industrial oils) and FKM for superior heat and chemical resistance (suited for high-temperature or corrosive environments). Precision-manufactured to fit diverse shaft sizes, it ensures secure installation and long-lasting lubrication retention. Balancing durability, ease of use, and targeted performance, it streamlines your selection process for sealing needs in low-dust, low-pressure equipment.
5.0
design customization
Please fill out the form below to request a quote or to request more information about us. Please be sure to upload customized requirement documents or pictures, and we will get back to you as soon as possible with a response. we're ready to start working on your new project, contact us now to get started.
Please fill out the form below to request a quote or to request more information about us. please be as detailed as possible in your message, and we will get back to you as soon as possible with a response. we're ready to start working on your new project, contact us now to get started.
1. Product Advantages
Low-Friction Operation: The single-lip, spring-free design minimizes contact friction with rotating shafts, reducing component wear and extending the service life of both the seal and connected equipment (e.g., low-speed bearings).
Dual Material Options: Available in NBR (excellent oil resistance for standard industrial oils) and FKM (superior heat resistance up to 200°C/392°F and chemical resistance for harsh environments), meeting diverse application needs.
Reliable Sealing Performance: The outer metal case ensures structural stability during installation, while the inner rubber body tightly adheres to shafts, preventing grease leakage and blocking mild dust intrusion (suitable for light-dust environments).
Cost-Effective Durability: Precision manufacturing by Forever Seals guarantees consistent quality, reducing frequent replacement costs and maintenance downtime for your equipment.
2. Working Principle
The VB type seal operates on a "static + dynamic sealing" mechanism:
Static Seal: The outer metal case (fixed to the equipment housing) forms a tight fit with the housing, preventing grease leakage from the static gap.
Dynamic Seal: The inner rubber lip (in contact with the rotating shaft) creates a micro-sealing interface. As the shaft rotates, the lip retains lubricating grease inside while blocking external light dust—its spring-free design reduces friction without compromising sealing efficiency, ideal for low-speed rotation.
3. Product Details
Structure: Outer metal skeleton (for rigidity) + inner rubber sealing element (for flexibility); single-lip design, no spring.
Pressure Resistance: Max. operating pressure ~0.03MPa (non-pressurized scenarios only).
Dimensions: Multiple precision-machined sizes available (e.g., 58805mm, 20023016mm) to fit various shaft diameters, ensuring a perfect match for your equipment.
Quality Assurance: Each seal undergoes strict leakage and wear testing before leaving the factory, complying with international industrial standards.
4. Application Range
Industrial Equipment: Low-speed bearings in conveyors, packaging machines, and small electric motors.
Mechanical Systems: Grease-sealed components in agricultural machinery (e.g., small tractors) and construction tools (e.g., handheld drills) with mild dust exposure.
Automotive Auxiliaries: Non-pressurized rotating parts in car air conditioning compressors and power steering pumps (using NBR/FKM variants as needed).
5. FAQ
Q1: Can the VB seal be used in high-pressure environments?
A1: No. It is designed for non-pressurized setups (max. ~0.03MPa); high pressure will cause leakage. For high-pressure needs, contact Forever Seals for custom solutions.
Q2: How to choose between NBR and FKM materials?
A2: Choose NBR for standard oil-based lubricants and temperatures below 120°C/248°F; select FKM for high-temperature (up to 200°C/392°F) or chemical-exposed environments (e.g., contact with solvents).
Q3: What is the service life of this seal?
A3: Under normal use (light dust, low speed, correct installation), it typically lasts 1–2 years. Service life may vary based on operating conditions—Forever Seals provides after-sales support for installation guidance.
6. Forever Seals’ Selling Points
20+ Years of Expertise: Specialized in sealing solutions, with a track record of delivering reliable products for global industrial clients.
Customization Capability: Offer tailor-made size and material modifications to fit unique equipment requirements.
Global After-Sales Service: Provide technical consultation, installation guidance, and replacement support via 24/7 online channels, ensuring a seamless user experience.
Eco-Friendly Production: Use lead-free, RoHS-compliant materials, aligning with environmental standards and sustainable development goals.
{{item.score}} Stars
{{item.pre}}%
{{item.nickname ? (item.nickname.slice(0, 2) + '*****') : item.source === 1 ? 'mall buyer' : '--'}}
{{item.comment_time}}
Review in the {{item.country}}
{{itemAttr.params_key}}: {{itemAttr.params_value}}
Get In Touch With Us
We are committed to meeting the diverse needs of our global customers through innovation and continuous improvement.
Need more information?
If you didn't find what you need, you can send an inquiry through our contact form.
Please fill in the form below.
Quick Links
Products
Contact Us