Silicone O-ring 57x3 mm VMQ/MVQ

Technical Specification

The nominal outside diameter is calculated from the specified dimensions:

D = 57 + 2 x 3 = 63 mm.

This is a geometric calculation, not an independently verified catalogue dimension with a specified tolerance.

The Shore A hardness, exact silicone compound, operating temperature range, colour, manufacturer, and EAN/GTIN have not been established from the supplied designation.

What Does Silicone O-ring 57x3 mm VMQ/MVQ Mean?

VMQ is a commonly used designation for methyl vinyl silicone rubber. MVQ is also encountered as an alternative designation for this elastomer family.

Neither designation establishes the exact compound formulation, hardness, or specific material approvals.

VMQ/MVQ Silicone Rubber Properties

VMQ silicone rubber belongs to a family of elastomers with properties particularly relevant to sealing applications involving temperature variation and atmospheric exposure.

Typical characteristics include:

• Good flexibility at low temperatures.

• Resistance to elevated temperatures, depending on the compound.

• Good resistance to ozone and ultraviolet radiation.

• Resistance to atmospheric ageing.

• Electrical insulating properties.

• Generally lower tear and abrasion resistance than certain other sealing elastomers.

• Chemical compatibility limitations with specific oils, fuels, solvents, and industrial fluids.

The exact operating temperature range depends on the silicone compound and service conditions.

It would be incorrect to assign a universal temperature rating to this specific O-ring without verified material documentation.

Similarly, silicone rubber does not automatically qualify a product for food contact, drinking water, or medical applications. Such uses require appropriate documentation and approvals for the actual compound and finished product.

Construction and Operating Principle

Silicone O-ring 57x3 mm VMQ/MVQ has a continuous circular shape with a nominal cross-section diameter of 3 mm.

When installed in a correctly designed sealing groove, the O-ring undergoes controlled compression, generating contact pressure against the mating surfaces. This contact pressure helps prevent fluid or gas leakage through the sealing interface.

Sealing performance depends on:

• Groove dimensions and tolerances.

• O-ring compression.

• VMQ compound hardness and elasticity.

• Surface finish of mating components.

• Operating temperature and pressure.

• Chemical compatibility with the sealed medium.

• Compression set characteristics.

• Installation conditions.

Silicone elastomers generally have limited abrasion and tear resistance compared with some alternative sealing materials. Dynamic applications therefore require additional engineering assessment.

Silicone VMQ O-ring vs. NBR and FKM O-rings

These comparisons describe general material characteristics rather than the verified performance of individual compounds.

O-rings with identical dimensions but different elastomer materials are not automatically interchangeable.

Selection and Interchangeability

Before selecting Silicone O-ring 57x3 mm VMQ/MVQ, verify:

1. Nominal inside diameter of 57 mm.

2. Nominal cross-section diameter of 3 mm.

3. Dimensional tolerances.

4. Shore A hardness.

5. Exact silicone compound.

6. Operating temperature and pressure.

7. Chemical compatibility with the medium.

8. Groove dimensions and required compression.

9. Static or dynamic sealing conditions.

10. Any required material approvals or certifications.

A VMQ O-ring measuring 57x3 mm is not automatically interchangeable with an NBR, EPDM, or FKM O-ring of the same dimensions.

Material selection must consider chemical resistance, mechanical properties, temperature performance, and application requirements.

Applications

Silicone O-ring 57x3 mm VMQ/MVQ may be considered for appropriately designed:

• Static seals in industrial housings and covers.

• Connections requiring flexibility at low temperatures.

• Sealing arrangements exposed to ozone and atmospheric conditions.

• Selected industrial equipment operating at elevated temperatures.

• Mechanical assemblies requiring a sealing ring with nominal dimensions of 57x3 mm.

These are potential applications based on the dimensions and general characteristics of VMQ silicone rubber, not confirmed OEM applications for a particular product.

Suitability for food-contact, drinking-water, or medical applications must not be assumed without relevant certification.

Alternative Designations and Search References

Natural descriptive variations include:

• Silicone O-ring 57x3 mm VMQ

• Silicone O-ring 57x3 mm MVQ

• O-ring 57x3 VMQ

• O-ring 57x3 MVQ

• VMQ Silicone Sealing Ring 57x3 mm

• Silicone Rubber O-ring 57x3 mm

These are descriptive alternatives, not verified manufacturer part numbers or OEM references.

No confirmed manufacturer-specific cross-references have been established.

Installation and Storage

Before installation, clean the sealing groove and inspect the mating surfaces for sharp edges, contamination, and mechanical damage.

During installation:

• Protect the O-ring from sharp edges.

• Avoid excessive stretching.

• Prevent twisting during positioning.

• Use installation aids compatible with the specific silicone compound.

• Ensure the O-ring is seated correctly inside the groove.

• Avoid local crushing or damage to the cross-section.

Store silicone O-rings in clean conditions, protected from contamination, mechanical damage, and environmental factors that may affect the elastomer.

FAQ - Frequently Asked Questions

What are the dimensions of Silicone O-ring 57x3 mm VMQ/MVQ?

The nominal inside diameter is 57 mm, and the cross-section diameter is 3 mm. The calculated nominal outside diameter is 63 mm.

What does VMQ/MVQ mean?

VMQ is a material designation for methyl vinyl silicone rubber. MVQ is also encountered as an alternative designation for this elastomer family. Neither designation defines the exact compound formulation or hardness.

Is Silicone O-ring 57x3 mm resistant to high temperatures?

VMQ silicone rubber generally offers good resistance to elevated temperatures. However, the permissible operating temperature depends on the specific compound, exposure duration, and service conditions. No exact temperature rating has been confirmed for this product.

Is a VMQ O-ring resistant to oil?

Compatibility depends on the type of oil, silicone compound, temperature, and exposure conditions. Resistance to a specific oil must be verified before use.

Can Silicone O-ring 57x3 mm be used in food-contact applications?

Only if the specific compound and finished product have documentation confirming compliance with the applicable food-contact requirements. The VMQ designation alone is insufficient.

Is VMQ suitable for dynamic sealing applications?

Standard VMQ compounds are generally preferred for static seals because silicone rubber often has limited abrasion and tear resistance. Dynamic use requires additional assessment.

Can Silicone O-ring 57x3 mm VMQ be replaced with an NBR O-ring?

Not automatically. NBR and VMQ differ in chemical resistance, temperature characteristics, and mechanical properties. Replacement requires verification of the operating conditions.

Silicone O-ring 57x3 mm VMQ/MVQ - Key Technical Information

Silicone O-ring 57x3 mm VMQ/MVQ is an elastomer sealing ring with a nominal inside diameter of 57 mm and a cross-section diameter of 3 mm. Its calculated nominal outside diameter is 63 mm. VMQ silicone rubber provides good low-temperature flexibility and resistance to ozone and atmospheric ageing. Hardness, exact temperature limits, and chemical compatibility require verification.

Silicone O-rings at simmering.pl

simmering.pl is a specialist B2B industrial trading platform supplying VMQ/MVQ silicone O-rings, technical seals, oil seals, bearings, and industrial components to manufacturers, engineering departments, maintenance teams, and technical procurement professionals.

Based in Lublin, Poland, simmering.pl provides worldwide shipping from stock in Poland, subject to product availability and destination-specific shipping arrangements.