Ever wondered how a small rubber ring can prevent a high-pressure hydraulic system from leaking? That’s the power of an Oリング — compact yet crucial, simple yet essential.

で ヘンゴシール, we’ve been manufacturing and exporting industrial-grade O-rings to over 20 countries. Whether your application involves hydraulic cylinders, pneumatic equipment, or automotive engines, choosing the right O-ring can make or break performance.

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What Is an O-Ring and How Does It Work?

アン Oリング is a circular elastomer seal that blocks the passage of fluids or gases between mechanical parts. When compressed in a groove between two surfaces, it deforms to create a tight seal that resists pressure, temperature changes, and vibration.

In hydraulic systems, this deformation is the key to leak-free operation. You can learn more about their role in fluid power systems in our 油圧シールガイド.

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How to Select the Right O-Ring Material for Your Application?

Material selection impacts temperature resistance, chemical compatibility, and lifespan. Here’s a quick reference:

材料	温度範囲 (°C)	主な強み	一般的な用途
NBR（ニトリル）	-40～120	優れた耐油性、コスト効率に優れています	燃料システム、油圧
FKM（バイトン®）	-20～230	High temperature and chemical resistance	Aerospace, engines
EPDM	-50～150	Weather, ozone, and steam resistance	屋外、空調
PTFE	-200から260	Chemically inert, food-grade	Medical, food, laboratory

If you’re unsure which to choose, see our detailed Silicone vs FKM O-Rings Comparison for complex environments.

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How Do You Measure O-Ring Sizes Correctly?

For the perfect fit, always measure:

• ID（内径）
• OD（外径）
• CS（断面厚さ）

Incorrect sizing leads to premature wear and leaks. Use our O-Ring Sizing Guide for step-by-step instructions.

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Why Do O-Rings Fail and How Can You Prevent It?

Common causes of O-ring failure include:

• Wrong material choice for temperature or chemicals
• Over-compression or twisting during installation
• Exposure to incompatible fluids
• Reusing aged O-rings that lost elasticity

You can reduce downtime and replacement costs by following the preventive steps in our Seal Failure Prevention Guide.

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Can O-Rings Handle Extreme Pressure and Temperature?

Yes, with the right compound.
For example, one manufacturer facing failures at 2500 PSI and 180°C switched to FKM Oリング:

• Reduced leakage by 75%
• Extended service life by 5×
• Lowered maintenance costs by 40%

For multi-purpose stock, consider the Oリングアソートキット to handle diverse applications.

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How Much Do O-Rings Cost and What Affects Pricing?

Pricing depends on:

• Material type (NBR is economical, FKM/PTFE are premium)
• サイズと許容範囲
• Order quantity (bulk orders reduce cost per unit)

We explain pricing strategies in our Oリングのコストと選択ガイド.

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Where to Get Reliable O-Rings for Industrial Applications

If you need consistent performance and dependable supply:

• Browse our O-Ring Product Range including NBR, FKM, EPDM, and PTFE options
• Request technical drawings, OEM branding, and custom sizes
• Access our Oリングキットガイド to optimize your maintenance inventory

📧 お問い合わせ | 📱 電話: +86 17622979498

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Related Topics You May Find Useful

• Hydraulic O-Rings: Types, Uses & Selection
• High-Pressure Hydraulic O-Rings: How to Choose the Most Durable Seals
• Buna-N vs EPDM O-Rings: Which One Should You Choose?
• EPDM vs FKM O-Rings: Which Material Is Right for Your Application?
• Prevent O-Ring Leakage Under High Pressure

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