O-Ring 7x1.5 mm VMQ/MVQ FDA 70 Shore A - Silicone Rubber Seal

O-Ring 7x1.5 mm VMQ/MVQ FDA 70 Shore A - Silicone Rubber Seal (Pack of 100)

O-Ring 7x1.5 mm VMQ/MVQ FDA 70 Shore A is a circular elastomeric sealing ring manufactured from silicone rubber, designated VMQ or MVQ. It has a nominal inside diameter of 7 mm, a cross-sectional diameter of 1.5 mm and a hardness of 70 Shore A. Its nominal outside diameter is 10 mm. Supplied in a pack of 100 pieces, the O-ring is primarily intended for static sealing applications. The FDA designation indicates a claimed relationship to US food-contact requirements, but the precise compliance status must be verified through documentation for the specific product.

Technical Specifications - O-Ring 7x1.5 VMQ/MVQ FDA 70 Shore A

The nominal outside diameter is calculated from the inside diameter and twice the cross-sectional diameter:

10 mm = 7 mm + 2 x 1.5 mm

This is a nominal geometric dimension and does not include manufacturing tolerances.

Exact dimensional tolerances, operating temperature limits, chemical resistance, mechanical strength, compression set and food-contact compliance conditions must be confirmed against the technical documentation for the specific silicone compound.

What Does O-Ring 7x1.5 VMQ/MVQ FDA 70 Shore A Mean?

The product designation identifies its dimensions, elastomer material, nominal hardness and claimed food-contact-related classification.

• 7 - nominal inside diameter in millimeters.

• 1.5 - nominal cross-sectional diameter in millimeters.

• VMQ - standardized designation for silicone rubber.

• MVQ - alternative designation encountered in commercial silicone sealing terminology.

• FDA - reference to US regulatory requirements potentially applicable to materials intended for food-contact applications.

• 70 Shore A - nominal hardness of the silicone elastomer.

• Pack of 100 - the sales package contains 100 individual O-rings.

The designation 7x1.5 mm specifies the inside diameter and cross-sectional diameter, not the inside and outside diameters.

VMQ vs MVQ - Silicone Rubber Material Designations

VMQ is the standardized designation for a class of silicone rubber elastomers used in industrial sealing products.

MVQ is an alternative designation encountered in technical catalogs and commercial product descriptions.

Both terms refer to silicone rubber, but neither identifies the complete compound formulation.

Two VMQ O-rings with identical dimensions and hardness may differ in:

• Compound formulation.

• Tensile strength.

• Tear resistance.

• Compression set.

• Chemical resistance.

• Temperature performance.

• Curing system.

• Food-contact compliance.

• Regulatory documentation.

Matching dimensions, material designation and hardness do not automatically guarantee complete interchangeability.

What Does FDA Mean for a Silicone O-Ring?

The FDA designation in the product name indicates that the material is marketed with reference to certain US regulatory requirements associated with food-contact applications.

The Food and Drug Administration (FDA) is the US federal agency responsible for regulating, among other things, food safety and certain food-contact substances.

For rubber sealing components, applicable requirements may include provisions of Title 21 of the Code of Federal Regulations, such as 21 CFR 177.2600, where relevant to the specific compound and intended conditions of use.

Is an FDA Silicone O-Ring Suitable for Food Contact?

An FDA designation in a commercial product name is not sufficient evidence that the finished O-ring complies with every applicable food-contact requirement.

Before using the product in food-processing equipment, verify:

• The exact silicone compound identification.

• The applicable FDA regulation or compliance basis.

• Supplier documentation or a declaration of compliance.

• Types of food that may contact the material.

• Permitted contact temperatures.

• Permitted contact duration.

• Any restrictions on repeated use.

• Cleaning and sanitation conditions.

• Requirements in the destination market.

Important: FDA does not issue a general certification for every silicone O-ring. The expression "FDA approved" should not be used without an appropriate legal and documentary basis.

FDA Compliance vs European Union Food-Contact Requirements

Compliance with US food-contact requirements does not automatically establish compliance with all applicable European Union regulations.

For food-contact applications in the EU, relevant requirements may include Regulation (EC) No 1935/2004 and other applicable legislation or national requirements governing the material and its intended use.

The appropriate documentation should be confirmed before the O-ring is installed in equipment requiring food-contact compliance.

Construction and Operating Principle

The 7x1.5 mm VMQ/MVQ silicone O-ring is a one-piece elastomeric sealing element with a circular cross-section.

It contains no metal reinforcement, spring or additional sealing lip.

When installed in a correctly designed groove, the O-ring is compressed between two mating surfaces.

The resulting elastic deformation generates contact pressure that helps prevent liquids or gases from passing through the sealing interface.

Effective sealing depends on:

• Correct groove geometry.

• Appropriate cross-sectional compression.

• Groove fill.

• Surface finish of mating components.

• Operating pressure.

• Temperature.

• Chemical compatibility.

• Compression set.

• Extrusion gap dimensions.

• Static or dynamic operating conditions.

Importance of the 1.5 mm Cross-Section

The cross-sectional diameter is a critical design parameter.

It influences the required groove depth, compression level, sealing contact pressure and available space for elastomer deformation.

An O-ring measuring 7x1.5 mm is not automatically interchangeable with a 7x1.78 mm or 7x2 mm O-ring.

Although the inside diameter is identical, different cross-sections require verification of the groove geometry and installation conditions.

Silicone Rubber VMQ 70 Shore A - Material Properties

Flexibility Across a Broad Temperature Range

VMQ silicone rubber is commonly used in sealing applications requiring flexibility at low temperatures and resistance to elevated temperatures.

Compared with many conventional rubber compounds, silicone elastomers can offer favorable temperature-related properties.

However, the exact permissible operating temperature range depends on:

• Silicone compound formulation.

• Duration of temperature exposure.

• Sealed medium.

• Mechanical loading.

• Compression level.

• Environmental conditions.

Specific minimum and maximum operating temperatures should not be assigned without verified material documentation.

Hardness of 70 Shore A

A nominal hardness of 70 Shore A describes the elastomer's resistance to indentation.

Hardness influences:

• Deformation during installation.

• Contact pressure.

• Required compression.

• Resistance to extrusion.

• Mechanical behavior under load.

A hardness value of 70 Shore A does not independently determine maximum permissible operating pressure.

Pressure capability depends on groove design, extrusion gap, temperature, compound properties and the complete sealing arrangement.

Chemical Compatibility

VMQ silicone rubber is not universally resistant to all chemicals.

Before installation, compatibility should be checked for:

• Mineral oils.

• Fuels.

• Solvents.

• Industrial chemicals.

• Cleaning agents.

• Disinfectants.

• Process fluids.

• Gases.

In food-processing applications, compatibility with food products and cleaning or sanitation chemicals is particularly important.

Chemical resistance also depends on temperature, concentration and exposure duration.

Mechanical Resistance

Silicone rubber may exhibit lower resistance to tearing and abrasion than elastomers specifically selected for intensive dynamic sealing.

Careful handling is therefore important during installation.

Avoid excessive stretching, twisting and dragging the O-ring across sharp edges.

VMQ vs NBR, FKM and EPDM O-Rings

These materials may all be available as O-rings with identical dimensions of 7x1.5 mm and nominal hardness of 70 Shore A.

However, they are not automatically interchangeable.

For food-contact applications, compliance documentation must also be checked for the specific material and finished product.

Alternative Designations and Search References

The product may appear under the following commercial designations:

• O-Ring 7x1.5 VMQ FDA 70 Shore A

• O-Ring 7x1.5 MVQ FDA 70 Shore A

• Silicone O-Ring 7x1.5 mm FDA

• VMQ O-Ring 7x1.5 mm

• MVQ Silicone O-Ring 7x1.5

• O-Ring 7x1.5 70 ShA Silicone

• Silicone Rubber O-Ring 7x1.5 mm

• Silicone Sealing Ring 7x1.5 mm

• O-Ring 7 mm ID x 1.5 mm CS

• Silicone O-Rings 7x1.5 mm - Pack of 100

These are alternative commercial descriptions of the same nominal dimensions and product designation.

They are not verified OEM part numbers or manufacturer-specific cross-references.

Selecting the Correct 7x1.5 mm Silicone O-Ring

Before ordering, verify the following parameters:

• Inside diameter: 7 mm.

• Cross-sectional diameter: 1.5 mm.

• Nominal outside diameter: 10 mm.

• Material: VMQ / MVQ silicone rubber.

• Nominal hardness: 70 Shore A.

• Groove dimensions and tolerances.

• Required cross-sectional compression.

• Installation stretch.

• Groove fill.

• Operating pressure.

• Operating temperature.

• Chemical compatibility.

• Static or dynamic sealing conditions.

• Surface finish.

• Extrusion gap.

• Required food-contact compliance documentation.

How Should the Groove Be Designed?

The groove must provide sufficient compression to create an effective seal while allowing space for elastomer deformation.

The groove depth should not simply be assumed to equal the 1.5 mm cross-sectional diameter.

Insufficient compression may cause leakage, while excessive compression may damage the elastomer or accelerate permanent deformation.

Groove dimensions should be selected according to the sealing arrangement and applicable engineering design guidelines.

What Is the Outside Diameter of a 7x1.5 mm O-Ring?

The nominal outside diameter is 10 mm.

It is calculated by adding twice the 1.5 mm cross-sectional diameter to the 7 mm inside diameter.

This value refers to the uninstalled, undeformed O-ring and does not include manufacturing tolerances.

Pack of 100 - Industrial Supply and Maintenance Applications

The product is supplied in a package containing 100 silicone O-rings, each with nominal dimensions of 7x1.5 mm.

Bulk packaging is particularly useful for:

• Industrial maintenance departments.

• Mechanical workshops.

• Equipment repair services.

• Manufacturing facilities.

• Technical procurement departments.

• Companies assembling sealing kits.

• Businesses requiring repeated replacement of identical sealing components.

A pack of 100 provides a convenient sales quantity for maintenance inventories, production planning and technical purchasing.

Before using these O-rings in applications requiring FDA-related compliance, verify the relevant documentation for the specific product.

Typical Applications of FDA-Designated Silicone O-Rings

Silicone O-rings marketed with an FDA designation may be considered for applications requiring materials suitable for specified food-contact conditions, provided that compliance is documented.

Potential applications include:

• Static joints in industrial equipment.

• Small covers and housings.

• Technical assemblies in processing equipment.

• Connections requiring elastomeric sealing rings.

• Mechanical components with correctly designed O-ring grooves.

• Equipment where documented food-contact material compliance is required.

These are general potential applications of silicone O-ring technology, not verified OEM applications for this specific product.

Important: An FDA designation does not automatically mean the O-ring is suitable for every food product, temperature, cleaning process or sanitation procedure.

Installation and Maintenance

Preparing the Sealing Surfaces

Before installation, clean the groove and mating surfaces.

Remove dirt, burrs and sharp edges that could damage the silicone elastomer.

Inspect the groove for scratches, corrosion and dimensional defects.

Installing the O-Ring

During installation:

• Position the O-ring evenly inside the groove.

• Avoid twisting the elastomer.

• Do not stretch the ring more than necessary.

• Avoid sharp installation tools.

• Use only assembly lubricants compatible with silicone and the sealed medium.

• In food-contact applications, verify that assembly lubricants meet applicable hygiene requirements.

• Check that the O-ring is not trapped or pinched between mating components.

Inspection During Service

Inspect the sealing arrangement during scheduled maintenance.

Replace the O-ring if it shows cracking, tearing, permanent flattening, excessive swelling or loss of elasticity.

Storage

Store silicone O-rings in a clean, dry environment.

Protect the package against contamination, mechanical damage, excessive stretching and permanent compression.

Frequently Asked Questions - O-Ring 7x1.5 VMQ/MVQ FDA 70 Shore A

1. What are the dimensions of the 7x1.5 mm silicone O-ring?

The O-ring has a nominal inside diameter of 7 mm, cross-sectional diameter of 1.5 mm and outside diameter of 10 mm.

2. How many O-rings are included in one package?

Each sales package contains 100 silicone O-rings with nominal dimensions of 7x1.5 mm.

3. What does FDA mean in the product designation?

FDA refers to US regulatory requirements potentially applicable to certain materials and food-contact applications. The compliance scope of this specific O-ring must be confirmed through documentation.

4. Can an FDA-designated silicone O-ring be used in food-processing equipment?

It may be suitable if the relevant documentation confirms compliance for the specific compound, intended food contact and operating conditions. The FDA designation alone is insufficient.

5. What does 70 Shore A mean?

70 Shore A indicates the nominal hardness of the silicone elastomer. It influences deformation, contact pressure and sealing behavior.

6. Can a 7x1.5 mm VMQ O-ring replace an NBR O-ring?

Not automatically. VMQ and NBR differ in chemical, thermal and mechanical properties. Food-contact compliance must also be verified where applicable.

7. Is the 7x1.5 mm silicone O-ring resistant to high temperatures?

VMQ silicone rubber is commonly used in applications requiring flexibility across a broad temperature range. Exact operating temperature limits depend on the specific compound.

8. Does FDA compliance automatically mean compliance with EU food-contact regulations?

No. US and EU regulatory requirements are not identical. Compliance with applicable European requirements must be verified separately.

O-Ring 7x1.5 VMQ/MVQ FDA 70 Shore A - Key Product Information

The 7x1.5 mm VMQ/MVQ FDA 70 Shore A O-ring is a silicone rubber sealing ring with a 7 mm inside diameter, 1.5 mm circular cross-section and 10 mm nominal outside diameter. Its hardness is 70 Shore A. Supplied in a pack of 100 pieces, the FDA designation indicates claimed food-contact-related compliance requiring verification through appropriate documentation.

The 7x1.5 mm VMQ/MVQ FDA 70 Shore A silicone O-ring, pack of 100, is offered by simmering.pl, an industrial sealing components and bearing supplier operated by TG Ersatzteile Polska Sp. z o.o. The company maintains a warehouse in Lublin, Poland, serving industrial customers, maintenance departments and technical procurement teams with shipping across Europe and worldwide.