ISO 3601 O-Rings Manufacturer & Supplier

ISO 3601 O-Rings are metric O-Rings manufactured according to the international standard ISO 3601. They are widely used in global industrial, hydraulic, and mechanical sealing applications where dimensional consistency and interchangeability are required.

ISO 3601 O-Ring Standard Overview

The ISO 3601 standard defines metric O-Ring sizes, tolerances, and quality requirements. It is internationally recognized and commonly used as an alternative to DIN 3771 in global markets.

• Standard: ISO 3601
• Size system: Metric (mm)
• Interchangeable with DIN 3771 in many applications
• Static and dynamic sealing

Available Materials for ISO 3601 O-Rings

• NBR (Buna-N) – oil resistance and general industrial use
• FKM (Viton®) – high temperature and chemical resistance
• EPDM – water, steam, and weather resistance
• HNBR – improved mechanical and heat resistance
• Silicone – low temperature flexibility
• FFKM – extreme chemical and temperature environments

Typical Applications

• Hydraulic and pneumatic systems
• Industrial pumps and valves
• Machinery and equipment manufacturing
• Automotive and mechanical engineering

ISO 3601 vs DIN 3771

ISO 3601 and DIN 3771 O-Rings share similar metric size ranges and are interchangeable in many applications. However, differences may exist in tolerance classes and quality grades depending on specific requirements.

Custom ISO 3601 O-Rings

We manufacture custom ISO 3601 O-Rings with specific materials, hardness levels (70 / 75 / 90 Shore A), colors, and tolerance control to meet demanding sealing applications.

Quality Control & Compliance

All ISO 3601 O-Rings are produced under strict quality management systems with dimensional inspection and material traceability to ensure consistent and reliable sealing performance.

Request a Quote for ISO 3601 O-Rings

Send us your ISO 3601 size, material, quantity, and application details. Our team will respond with pricing and technical support within 24 hours.