OR-VMQ70-4-76x1-78-MS
O-ring 4.76×1.78 VMQ 70 Shore A
This VMQ silicone O-ring is the ideal choice for food contact, medical applications and extreme temperatures from -60 °C to +200 °C.
- SKU
- OR-VMQ70-4-76x1-78-MS
- Dimensions
- 4.76 × 1.78 mm
- Material
- VMQ · 70 Sh A
excl. VAT
From €0.06
€0.07 incl. VAT
In stock in Považská Bystrica — delivery 1–2 business days (SK), 3–5 days (EU)
Certifications
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VMQ O-ring 4.76 × 1.78 mm (inner diameter 4.76 mm, cross-section 1.78 mm). Outer diameter 8.32 mm. Hardness 70 Sh A. Temperature range -60 °C to 200 °C. Standard ISO3601-4.76x1.78. Certifications: FDA, USP_CLASS_VI.
For a static seal of this size (outer diameter 8.32 mm), the ISO 3601-2 / Parker O-Ring Handbook ORD 5700 design guidance recommends a groove depth of about 1.39 mm and a groove width of about 2.31 mm for the 1.78 mm cross-section — roughly 22 % squeeze.
- Inner diameter (ID)
- 4.76 mm
- Cross-section (CS)
- 1.78 mm
- Outer diameter (OD)
- 8.32 mm
- Dimensions
- 4.76x1.78
- Material
- VMQ
- Hardness
- 70 Sh A
- Colour
- red
- Temperature range
- -60 °C to 200 °C
- Standard code
- ISO3601-4.76x1.78
- ISO 3601 size
- 4.76x1.78
- SKU
- OR-VMQ70-4-76x1-78-MS
- Country of origin
- DE
- Availability
- In stock
Technical specifications
| Material | VMQ |
|---|---|
| Shore hardness | 70 Sh A |
| Color | red |
| Temperature range | -60 °C to 200 °C |
| Tensile strength | 8 MPa |
| Ultimate elongation | 400 % |
| Compression set | 22 % |
| Specific gravity | 1.25 g/cm³ |
| Certifications | FDA, USP_CLASS_VI |
Cross-standard size references
- Standard code
- ISO3601-4.76x1.78
- ISO 3601
- 4.76x1.78
- DIN 3771
- 4.76x1.78
Material properties
Silicone rubber (VMQ) has an outstanding temperature range from -60 °C to +200 °C (short-term +230 °C) and excellent biocompatibility. It offers superb resistance to ozone, UV radiation, water, polar solvents, dilute acids and most foods. Available grades with FDA, USP Class VI, BfR, EC 1935/2004 and 3A certification for food and pharmaceutical industries. Its weak mechanical strength is compensated by static applications — not suitable for dynamic sealing functions with high friction loads.
- Material
- VMQ
- Chemical name
- Silicone Rubber (Methyl Vinyl Siloxane)
- Material grade
- Silicone, MVQ, Silastic
- Trade names
- Dow Corning Silastic, Wacker Elastosil, Shin-Etsu KE
Suitable for various industries
Silicone O-rings are used in the food industry (CIP/SIP systems, milking machines, packaging lines), medicine (inhalers, catheters, dialysis equipment), pharmaceuticals (fermenters, valves), cosmetics and high-temperature static sealing applications.
Application notes
Ideal for food industry, pharmaceuticals and static high-temperature seals. Avoid dynamic applications with mineral oils — weak mechanical strength. For heavy steam prefer peroxide-cured EPDM.
Advantages
- Extreme temperature range -60 °C to +200 °C (short-term +230 °C)
- Excellent biocompatibility for food and medical applications
- Available FDA, USP Class VI, BfR and 3A certifications
- Resistant to ozone, UV and weathering
- Available in colours (red, white, blue, transparent)
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