Premium NBR/FKM Rubber DIN 3869 ED Seals – Engineered for Extreme Durability & Precision Sealing

Product Core Highlights
✅ Industrial-Grade Materials – Offers two rubber options: NBR (oil-resistant standard) and FKM (high-temperature chemical-resistant)
✅ Strict Compliance – Meets DIN 3869 ED standard, ensuring dimensional and performance consistency
✅ Excellent Wear Resistance – Reinforced structural design extends service life in dynamic/static applications
✅ Broad Applicability – Suitable for hydraulic, pneumatic, fluid handling, and industrial piping systems
✅ Ready-to-Install – Precision mold manufacturing eliminates the need for additional adjustments, reducing installation costs

Product Overview
Our DIN 3869 ED seals are designed for high-demand industrial sealing applications. Manufactured from high-quality NBR (nitrile rubber) or FKM (fluorocarbon rubber), they ensure reliability under pressure, temperature, and chemical media conditions. These seals are suitable for standard ED-type grooves, offering static or low-speed dynamic sealing solutions, making them an ideal choice for hydraulic fittings, flange connections, and pipe sealing.

Technical Specifications
• Standard Specification: DIN 3869 Type ED
• Material Options:
◦ NBR (Nitrile Butadiene Rubber): Resistant to mineral oils, fuels, water, and air; temperature range -30°C to +100°C
◦ FKM (Fluorocarbon Rubber): Resistant to high temperatures, chemicals, and corrosive media; temperature range -20°C to +200°C
• Color: NBR (Black), FKM (Brown or Black)
• Hardness Range: 70°A – 90°A (Customizable upon request)
• Available Sizes: Inner diameter from 8mm to 200mm (Non-standard customization supported)

NBR vs. FKM Material Selection Guide

Performance Advantages
• Wear Resistance Design: Special composite formula and structural optimization reduce wear and compression deformation during long-term use.
• Sealing Stability: Maintains sealing integrity under pressure fluctuations to prevent leakage.
• Environmental Adaptability: NBR is suitable for general industrial environments; FKM is suitable for harsh conditions such as high temperatures and chemical exposure.
• Cost-Effective: Long service life reduces replacement frequency and maintenance costs.

Application Fields
• Hydraulic Systems: Pipe fittings, valve blocks, pump/motor interfaces
• Pneumatic Equipment: Cylinders, compressed air pipe connections
• Fluid Handling: Flange seals for water, oil, and chemical pipelines
• Industrial Machinery: Hydraulic circuits in engineering machinery, injection molding machines, and machine tools