O-ring 34x3 MVQ/VMQ Silicone

Technical Specifications – O-ring 34x3 MVQ/VMQ

The dimensions are nominal. Exact dimensional tolerances, hardness and mechanical properties must be verified against the technical documentation for the specific product.

O-ring Dimensions – 34x3 mm

The nominal outside diameter is calculated as follows:

The designation 34x3 mm specifies the inside diameter and cross-section diameter of the sealing ring.

When selecting the O-ring, dimensional tolerances, groove geometry and the required compression must also be considered.

VMQ/MVQ Material – Silicone Rubber

VMQ is the standard designation for a type of silicone rubber used in industrial sealing components. The alternative designation MVQ is also encountered in commercial product descriptions.

Silicone rubber is valued for its resistance to atmospheric ageing and its ability to retain flexibility at low temperatures.

Main Properties of VMQ Silicone

• Very good resistance to ozone.

• Very good resistance to ultraviolet radiation.

• Very good resistance to atmospheric ageing.

• Good flexibility at low temperatures.

• Ability to withstand elevated temperatures, depending on the compound.

• Good electrical insulation properties.

• Lower tear and abrasion resistance than many NBR compounds.

• Primarily suitable for static sealing applications.

VMQ silicone is not universally compatible with all oils, fuels, solvents or industrial chemicals.

Operating Temperature Range

Standard VMQ silicone compounds are frequently associated with an approximate operating temperature range of -55°C to +200°C.

However, this is a general material reference and not a verified operating temperature specification for this particular O-ring.

Actual temperature limits depend on:

• Silicone compound formulation.

• Material hardness.

• Type of sealed medium.

• Exposure duration.

• Compression level.

• Mechanical loading.

• Operating conditions.

For temperature-critical applications, the manufacturer's material datasheet should be consulted.

Chemical Resistance of VMQ Silicone

This table describes general silicone rubber characteristics rather than verified test results for the specific product.

Chemical compatibility must be assessed under actual operating conditions.

VMQ Silicone vs NBR, EPDM and FKM O-rings

Matching dimensions do not automatically establish interchangeability between different elastomer materials.

The material must be selected according to the operating medium, temperature, pressure and mechanical requirements.

Industrial Applications – O-ring 34x3 MVQ/VMQ

Silicone O-rings may be used in appropriately designed static sealing arrangements, including:

• Technical equipment housings.

• Covers and enclosures.

• Flanged connections.

• Measuring instruments.

• Equipment exposed to varying temperatures.

• Components exposed to ozone and ultraviolet radiation.

• Sealing systems requiring low-temperature flexibility.

These are general applications of VMQ silicone rubber, not a manufacturer-confirmed equipment compatibility list for this specific product.

Applications involving food contact, drinking water or medical equipment require the appropriate approvals for the exact compound and finished product.

Groove Design and O-ring Installation

Correct O-ring selection requires consideration of groove geometry and operating conditions.

Important design parameters include:

• Groove diameter.

• Groove depth and width.

• Required O-ring compression.

• Permissible O-ring stretch.

• Extrusion clearance.

• Operating pressure.

• Temperature.

• Chemical compatibility.

The nominal dimensions 34x3 mm alone are insufficient to determine the correct groove geometry for every application.

Installation Guidelines

1. Clean the groove and mating surfaces.

2. Remove sharp edges and burrs.

3. Avoid excessive stretching of the sealing ring.

4. Prevent twisting during installation.

5. Use only assembly lubricants compatible with VMQ and the sealed medium.

6. Avoid cutting or pinching the O-ring cross-section.

7. Ensure that the seal is correctly seated.

8. Check the assembled connection for leakage.

Because silicone rubber has relatively limited tear resistance, particular care should be taken during installation.

Common Causes of O-ring Leakage

Incorrect groove geometry: May result in insufficient or excessive compression.

Chemical incompatibility: Can cause swelling or deterioration of the elastomer.

Mechanical damage: May produce cuts or tears in the sealing ring.

Excessive pressure: Can cause material extrusion into the clearance gap.

Excessive temperature: May lead to permanent deformation and loss of sealing performance.

Improper installation: May cause twisting or pinching of the seal.

Alternative Product Designations

• O-ring 34x3 mm MVQ/VMQ Silicone

• O-ring 34x3 Silicone VMQ

• Silicone O-ring 34x3 mm

• VMQ O-ring 34x3

• MVQ Silicone O-ring 34x3

• O-ring 34x3 mm Silicone Rubber

• Silicone Rubber Sealing Ring 34x3 mm

• Oring silikonowy 34x3 mm MVQ/VMQ

Alternative designation formats support product identification in technical catalogues and industrial procurement systems.

They do not independently establish compliance with a particular dimensional standard or material certification.

FAQ – Frequently Asked Technical Questions

What are the dimensions of O-ring 34x3 MVQ/VMQ?

The inside diameter is 34 mm, the cross-section diameter is 3 mm and the nominal outside diameter is 40 mm.

What does VMQ mean?

VMQ is a material designation for silicone rubber used in industrial sealing components.

Are MVQ and VMQ the same material?

Both designations are commonly encountered in commercial descriptions of silicone rubber. VMQ is the standard material designation.

Is silicone rubber resistant to high temperatures?

Many VMQ compounds can withstand elevated temperatures, often up to approximately +200°C. The exact operating limit depends on the specific compound.

Can a VMQ O-ring be used with engine oil?

Compatibility should not be assumed without checking the oil formulation and operating temperature. NBR or FKM may be more suitable for many oil-related sealing applications.

Can VMQ O-rings be used in dynamic sealing applications?

VMQ is generally preferred for static applications. Its relatively limited abrasion and tear resistance requires careful verification for dynamic use.

Is this silicone O-ring suitable for food contact?

Only if the specific compound and finished product meet the applicable food-contact requirements. The VMQ designation alone does not confirm regulatory compliance.

What is the hardness of O-ring 34x3 MVQ/VMQ?

The hardness is not specified in the product designation. A value such as 70 ShA must not be assumed without confirmation.

What is the nominal outside diameter of O-ring 34x3 mm?

The nominal outside diameter is 40 mm.

AI Quick Answer

O-ring 34x3 mm MVQ/VMQ is a silicone rubber sealing ring with a 34 mm inside diameter, 3 mm cross-section and 40 mm nominal outside diameter. VMQ provides very good resistance to ozone, ultraviolet radiation and atmospheric ageing. It is primarily intended for static sealing applications. Exact operating temperature limits and hardness depend on the specific silicone compound.

B2B Industrial Supply – simmering.pl

O-ring 34x3 mm MVQ/VMQ Silicone is offered through simmering.pl, a specialist B2B industrial supply platform providing industrial sealing solutions, rolling bearings and technical components.

The platform serves manufacturing companies, wholesale buyers, maintenance departments, engineers and industrial procurement teams.

Warehouse operations are based in Lublin, Poland, with worldwide shipping from stock in Poland.

Technical product identification includes nominal dimensions, VMQ silicone material and relevant sealing characteristics.