O-Ring VMQ 5.28x1.78 MVQ 70 Shore A Silicone Rubber Seal

What Is the O-Ring 5.28x1.78 mm MVQ 70 Shore A 100 pcs?

The O-Ring 5.28x1.78 mm MVQ 70 Shore A is a technical silicone sealing ring manufactured from MVQ (VMQ - Silicone Rubber). The dimensions 5.28x1.78 mm indicate an inside diameter of 5.28 mm and a cross-section of 1.78 mm. The 100-piece pack is designed for workshops, maintenance departments, laboratories and small production runs where a practical quantity of high-quality silicone O-rings is required without purchasing industrial bulk packs.

Applications in Workshops and Maintenance

The 5.28x1.78 mm silicone O-ring is commonly used in:

• Laboratory equipment
• Medical devices
• Food processing equipment
• Pneumatic systems
• Industrial automation
• Electronic devices
• Technical fittings
• Small household appliances
• Machine maintenance
• Technical workshops
• Small-scale manufacturing

Technical Specification

Product Type: O-Ring

Material: MVQ / VMQ (Silicone Rubber)

Inside Diameter: 5.28 mm

Cross Section: 1.78 mm

Colour: Transparent or White (depending on version)

Hardness: 70 Shore A

Operating Temperature: Approximately -60°C to +200°C

Resistance to:

• High and low temperatures
• UV radiation
• Ozone
• Weathering
• Water
• Many mild chemicals

Packaging: 100 pieces

Why Choose MVQ Silicone?

MVQ (VMQ) silicone rubber is selected for applications requiring excellent flexibility and resistance to extreme environmental conditions.

Key advantages include:

• Wide operating temperature range
• Excellent flexibility
• Outstanding UV resistance
• Ozone resistance
• Excellent ageing resistance
• Very good electrical insulation properties
• Maintains elasticity over time
• Long service life

Benefits of the 100-Piece Pack

The 100-piece package is ideal for:

• Workshops
• Maintenance departments
• Laboratories
• Service technicians
• Small production batches
• Technical supply stores

It provides a practical inventory of commonly used sealing rings without requiring industrial bulk quantities.

Typical Applications

The 5.28x1.78 mm MVQ O-Ring is widely used in:

• Food processing equipment
• Medical equipment
• Industrial automation
• Pneumatic systems
• Laboratory instruments
• Electronic devices
• Household appliances
• Measuring equipment
• OEM assemblies
• Maintenance and repair operations

Installation Recommendations

Before installation, verify:

• Groove dimensions
• Sealing surface condition
• Material compatibility
• Operating temperature
• Working pressure
• Proper assembly lubrication

Correct installation helps ensure reliable sealing performance and extended service life.

Frequently Asked Questions (FAQ)

What is an MVQ silicone O-ring used for?

It is used to seal equipment operating across a wide temperature range and exposed to UV radiation, ozone and weathering.

Is MVQ silicone resistant to high temperatures?

Yes. Standard MVQ silicone operates at temperatures from approximately -60°C to +200°C.

Is this silicone O-ring suitable for food applications?

It may be used in food-contact applications only when manufactured from a certified food-grade silicone compound.

Is the 100-piece pack suitable for workshops?

Yes. It is an ideal quantity for workshops, maintenance departments and routine repair work.

How should silicone O-rings be stored?

Store them in a cool, dry place away from sharp objects, excessive heat and substances that could damage the elastomer.

Frequently Asked Questions from Maintenance Engineers

Is MVQ better than NBR?

It depends on the application. MVQ offers superior resistance to temperature, UV and ozone, while NBR provides better resistance to mineral oils and fuels.

Does silicone remain flexible at very low temperatures?

Yes. One of the main advantages of MVQ silicone is its excellent low-temperature flexibility.

Can this O-ring be used outdoors?

Yes. Silicone rubber has outstanding resistance to UV radiation, ozone and weathering.

Is MVQ suitable for electrical applications?

Yes. Silicone offers excellent electrical insulation properties, making it suitable for electronic and electrical equipment.

Are larger package sizes available?

Yes. Depending on the size, larger industrial packaging options are also available for high-volume users.