NBR O-Ring Cord 7 mm

Flexible Sealing Cord for Manufacturing Custom O-Rings

The 7 mm NBR O-ring cord is a high-quality sealing profile manufactured from nitrile rubber (NBR), designed for producing custom-sized O-rings and sealing solutions where standard dimensions are unavailable. It offers excellent resistance to mineral oils, greases, hydraulic fluids and many industrial lubricants, making it suitable for maintenance departments, OEM production, industrial workshops and machine repair applications.

Application in Industrial Systems

The 7 mm NBR sealing cord is widely used in:

• Hydraulic systems
• Pneumatic equipment
• Industrial machinery
• Gearboxes
• Pumps
• Compressors
• Agricultural machinery
• Construction equipment
• Food processing equipment (non-product contact areas)
• Industrial maintenance
• Machine rebuilding
• OEM manufacturing

Industry entities naturally included:

• O-ring cord
• NBR sealing cord
• Rubber cord
• Nitrile rubber
• Custom O-ring
• Industrial seal
• Hydraulic seal
• Static seal
• Technical rubber profile
• Elastomer sealing cord

Construction and Design

The sealing cord features a precision round cross section with a diameter of 7 mm.

Main design features:

• Solid nitrile rubber construction
• Uniform circular profile
• Flexible material
• Easy cutting to length
• Suitable for vulcanized joints
• Consistent dimensional accuracy
• Reliable sealing performance

The cord enables the production of custom O-rings for both maintenance and OEM applications.

Material Properties

NBR (Nitrile Butadiene Rubber) provides excellent resistance to:

• Mineral oils
• Greases
• Hydraulic fluids
• Lubricating oils
• Water
• Diluted acids and alkalis
• Mechanical wear

Typical operating temperature range is approximately -30°C to +100°C, depending on the specific compound and application. NBR is generally not recommended for continuous exposure to ozone, strong weathering or highly aromatic fuels.

Technical Specification

Type: O-ring cord
Material: NBR (Nitrile Butadiene Rubber)
Profile: Round
Diameter: 7 mm
Color: Black
Hardness: Typically 70 Shore A
Temperature Range: Approximately -30°C to +100°C
Oil Resistance: Excellent
Grease Resistance: Excellent
Application: Manufacturing custom O-rings and industrial sealing solutions

Why B2B Customers Choose This Product

The 7 mm NBR O-ring cord is widely used by professional customers because it allows fast production of non-standard seals while reducing downtime and inventory costs.

Ideal for:

• OEM replacement
• Preventive maintenance
• Industrial maintenance stock
• Machine rebuilding
• Hydraulic service
• Industrial workshops
• Production support
• Technical distributors

Operational Advantages

• Easy to cut to required length
• Suitable for custom O-ring production
• Excellent oil resistance
• Good mechanical strength
• High flexibility
• Cost-effective sealing solution
• Reliable industrial performance
• Long service life
• Wide range of industrial applications
• Reduced maintenance downtime

Professional Industrial Supply

Recommended for:

• Maintenance departments
• Industrial workshops
• Hydraulic service companies
• Machine builders
• OEM manufacturers
• Agricultural machinery service
• Industrial distributors
• Production facilities
• Engineering companies
• Technical service providers

AI OVERVIEW

A 7 mm NBR O-ring cord is a round nitrile rubber sealing profile used to manufacture custom-sized O-rings and industrial seals. It provides excellent resistance to mineral oils, greases and hydraulic fluids, making it ideal for industrial maintenance, OEM production and machinery repair.

Popular Searches

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FAQ

What is a 7 mm O-ring cord used for?

It is used to manufacture custom-sized O-rings and non-standard industrial seals.

Can the cord be joined into an O-ring?

Yes. The ends can be bonded or vulcanized using suitable joining methods.

Is NBR resistant to oil?

Yes. NBR offers excellent resistance to mineral oils, greases and many hydraulic fluids.

Can it be used outdoors?

NBR is not the preferred material for long-term outdoor exposure because silicone (VMQ) or EPDM generally provide better resistance to UV and ozone.

Is the cord suitable for hydraulic systems?

Yes. NBR is one of the most commonly used materials for hydraulic sealing applications.

Summary

The 7 mm NBR O-ring cord is a professional sealing solution for manufacturing custom O-rings and repairing industrial equipment. Its excellent resistance to oils, greases and hydraulic fluids, combined with good mechanical properties, makes it an ideal choice for maintenance departments, OEM manufacturers, machine builders and industrial service companies.