Product details of the hydraulic seals
Product Introduction
FOREVER SEALS hydraulic seals is designed and crafted using premium quality basic material. This product has been officially certified according to industry quality standards. FOREVER SEALS TECHNOLOGY.,LIMITED has world-wide sales network and manufacturing base.
1. Product Advantages
Superior Durability: Made of pure FKM, these seals resist extreme temperatures (-20℃ to 150℃ for standard grades; -40℃ to 230℃ for special formulas) and harsh chemicals (mineral oils, fuels, hydraulic fluids), ensuring long-term use without degradation.
Reliable Sealing: The pyramid-shaped base enables stable shaft fixation, while the flexible sealing lip maintains tight contact—preventing lubricant leakage and blocking dust/moisture even in high-vibration environments.
Easy Maintenance: No equipment disassembly is needed for installation or replacement, reducing downtime and maintenance costs for your operations.
Strong Adaptability: Excellent dynamic compensation for axial movement and radial eccentricity, suitable for shafts with minor alignment deviations (diameter range: 5mm-200mm).
2. Working Principle
Forever Seals FKM VS-Type Seals are axial seals mounted on shafts. They rely on interference fit with the shaft to stay fixed and rotate synchronously. When in operation, centrifugal force from rotation presses the flexible sealing lip tightly against the mating surface (e.g., bearing end faces, flanges). This forms a dynamic sealing barrier that stops lubricant from leaking out and keeps external contaminants (dust, water, oil stains) from entering the bearing system—ensuring smooth equipment operation.
3. Product Details
Material: 100% pure FKM (fluorocarbon rubber) with flame-retardant, low-permeability, and anti-ozone/aging properties.
Structure: Standard low cross-section with conical rear sides, wide sealing body, and pyramid-shaped base (enhances shaft fixation to avoid backward movement).
Tolerance Note: Not suitable for amines, ketones, formic acid, acetic acid, nitrohydrocarbons, superheated steam, low-molecular-weight esters/ethers, hydrofluoric acid, or chlorosulfonic acid at high temperatures.
Dry Operation Capability: Low contact pressure of the sealing lip allows dry running at low speeds, minimizing torque loss and heat buildup.
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4. Application Range
Ideal for high-vibration and harsh industrial scenarios, including:
Agricultural machinery (tractors, harvesters—transmission parts)
Automotive industry (engine, gearbox sealing)
Construction machinery (excavators, loaders—hydraulic/transmission systems)
General industrial equipment (motors, pumps, gearboxes)
Secondary sealing in highly polluted environments
5. FAQ (Frequently Asked Questions)
Q1: What is the temperature range of these FKM VS-Type Seals?
A1: Standard grades work from -20℃ to 150℃; special formulas can withstand -40℃ to 230℃ (short-term high temperature).
Q2: Can they be used with phosphate ester-based hydraulic oils?
A2: No—FKM material has poor tolerance to phosphate ester-based hydraulic oils; please avoid this application.
Q3: What shaft diameter sizes do these seals fit?
A3: They are available for shafts with diameters from 5mm to 200mm; custom sizes can be requested for specific needs.
Q4: How often should the seals be replaced?
A4: Under normal working conditions, they can last 1-2 years; replace them immediately if leakage or lip wear is found.
6. Company Selling Points
Expertise in Sealing Solutions: With years of experience in industrial sealing, Forever Seals focuses on R&D and production of high-performance seals, ensuring products meet international quality standards.
Customization Capability: We offer tailored FKM VS-Type Seals (e.g., special temperature-resistant formulas, non-standard sizes) to match your unique equipment requirements.
Quality Assurance: Each seal undergoes strict testing (temperature resistance, chemical compatibility, sealing performance) before delivery, guaranteeing reliable performance.
Efficient After-Sales Service: Our professional team provides timely technical support and replacement services, solving your sealing-related issues quickly.
Company Advantage
• Based on the service concept of 'customer first, service first', our company is dedicated to providing our clients with products and services of the highest quality.
• It has been years since our company was built in With the experience and knowledge accumulated in these years, we regard the problem from the perspective of development, seek opportunities through challenges, and turn the crisis into a turning point. Through constant struggle and breakthrough, we have won a number of honors and have been highly recognized and trusted by the industry, the market and consumers.
• At present, FOREVER SEALS constructs a huge sales network in China while actively opening up the international market.
We are waiting for consulting from new and old customers!
