O-Ring Kit
Ching Her O-Ring | Global Leader in Industrial Sealing Solutions
Ching Her Enterprise O-Ring Kits (also known as O-Ring Repair Kits, O-Ring Assortment Boxes, Rubber Seal Kits) are professional sealing solutions engineered for on-site emergency repairs, routine machinery maintenance, and minimizing production downtime. We provide a complete range of Imperial AS568 Series (OK-AS), Japanese JIS Series (OK-JIS, including P/G/S/V specifications), and Metric Series (OK-mm). One assortment box meets all your instant replacement needs across various industrial dimensions.
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O-Ring Kit Specifications & Industrial Applications
Our standard repair kits are readily available in three major specification codes (OK-AS, OK-JIS, OK-mm) to meet global mechanical and component sealing standards:
How do I choose between NBR 70 and FKM 75 for an O-Ring Kit?
Answer: When selecting the material for your O-ring repair kit, prioritize the operating temperature and the fluids it will contact:
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NBR 70/90 (Nitrile Repair Kit): Ideal for general industrial applications, automotive workshop oil changes, pneumatic tools, and hydraulic systems. It offers excellent oil resistance, wear resistance, and high tensile strength, making it the most cost-effective sealing spare parts choice for daily maintenance.
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FKM 75/90 (Viton/Fluororubber Repair Kit): Engineered specifically for harsh and extreme environments. It features superior high-temperature resistance (up to 200°C and above), chemical corrosion resistance, strong acid/alkali tolerance, and exceptional high-vacuum sealing performance. Perfect for semiconductor vacuum equipment, petrochemical pipelines, aerospace, or high-spec precision machinery maintenance.
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* Note: If your machinery requires food-grade, medical-grade, or extreme low-temperature properties, Ching Her also supports custom-assembled Silicone or EPDM repair assortments.
Why Choose Ching Her Enterprise O-Ring Kits?
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Most Complete Specifications: Perfectly gathers the most commonly used cross-sections and inner diameters of AS568, JIS, and Metric sizes, resolving over 90% of on-site emergency replacement needs.
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Factory-Direct Quality Supervision: We use 100% pure, premium raw rubber materials (zero low-grade recycled rubber). This ensures higher pressure resistance, a longer sealing lifespan, and reliable leakage prevention.
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Ready Stock & Direct Supply: Ready to meet sudden factory shutdowns or rapid restocking for automotive repair shops. Fully supports low-volume wholesale and large-scale OEM/ODM bulk purchasing.