Professional O-Ring and Oil Seal Manufacturer, Sealing Solution Supplier Since 2008.
Premium SPNC Seal: PTFE Wear Ring with NBR O - Ring
High - Performance Combined Seal for Hydraulic and Pneumatic Applications
The SPNC seal is a meticulously engineered combined sealing component, designed to deliver reliable and long-lasting performance in hydraulic and pneumatic systems. It integrates two high-quality materials: a pure PTFE wear ring and an NBR O-ring. The PTFE wear ring brings exceptional wear resistance and chemical stability, effectively withstanding friction and harsh media to minimize seal surface damage. The NBR O-ring provides excellent elasticity, ensuring a tight initial seal and compensating for slight dimensional deviations. This synergy guarantees consistent sealing efficiency, reduces equipment maintenance frequency, extends the service life of sealing systems, and ultimately supports smooth, uninterrupted operation of machinery—making it a trusted choice for industrial sealing needs.
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design customization
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1. Product Advantages
The SPNC seal, exclusively crafted by Forever Seals, stands out with three core advantages. First, superior durability: Its pure PTFE wear ring resists extreme friction and corrosion from oils, solvents, and industrial fluids, ensuring 2x longer service life than standard seals. Second, reliable sealing performance: The NBR O-ring’s high elasticity maintains tight contact even with slight dimensional variations in equipment, eliminating leakage risks. Third, low maintenance cost: The synergistic design reduces wear on both the seal and mating parts, cutting down machinery downtime and maintenance frequency for industrial users.
2. Working Principle
The SPNC seal operates on a “dual-component synergy” principle. When installed in hydraulic/pneumatic cylinders, the PTFE wear ring acts as a protective barrier: it bears direct friction between the piston and cylinder wall, preventing abrasion to the softer NBR material. Simultaneously, the NBR O-ring leverages its elastic rebound to generate constant sealing pressure, filling micro-gaps and blocking fluid/gas leakage. This division of labor ensures stable performance across pressure ranges (0-30MPa) and temperatures (-20°C to 120°C)—a design optimized by Forever Seals’ 15+ years of sealing engineering experience.
3. Product Details
Material Quality: Forever Seals sources food-grade PTFE (compliant with FDA standards) and high-purity NBR (with 70±5 Shore A hardness) to avoid material degradation.
Precision Manufacturing: Each seal undergoes CNC machining with ±0.02mm tolerance, ensuring perfect fit with standard cylinder sizes (ISO 6431, DIN 2405).
Visual Identification: A laser-engraved “Forever Seals” logo on the PTFE ring guarantees authenticity, while color-coded NBR O-rings (black for standard, blue for high-temperature variants) simplify inventory management.
4. Application Range
Ideal for industries requiring robust sealing solutions, the SPNC seal is widely used in:
Hydraulic systems: Construction machinery (excavators, loaders), industrial presses, and injection molding machines.
Pneumatic systems: Automated assembly lines, air compressors, and packaging equipment.
Special environments: Automotive manufacturing (engine oil seals), food processing (sanitary pneumatic tools), and marine equipment (corrosion-resistant hydraulic cylinders).
5. FAQ
Q1: Can the SPNC seal resist high-temperature fluids?
A: Yes. The standard SPNC seal works at -20°C to 120°C; for high-temperature needs (up to 150°C), Forever Seals offers a custom variant with FKM-modified NBR—contact our sales team for details.
Q2: How to choose the right SPNC seal size for my equipment?
A: Provide your cylinder bore diameter, piston rod diameter, and groove dimensions to our engineering team. Forever Seals offers free size-matching services and 2D/3D drawings for quick integration.
Q3: What is the warranty period for the SPNC seal?
A: All SPNC seals come with a 12-month warranty. If leakage or wear occurs within the period (excluding improper installation), Forever Seals provides free replacement.
6. Enterprise Selling Points (Forever Seals)
Expertise: 15+ years of focusing on industrial sealing solutions, with a R&D team that holds 8 patents for composite seal designs.
Quality Assurance: Each SPNC seal passes 3 strict tests (leakage, friction, and temperature resistance) before delivery, complying with ISO 9001 and IATF 16949 standards.
Customer-Centric Service: Offer customizations (material, size, color) within 7 days, and global after-sales support via 24/7 hotline
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