OR-VMQ70-26x4-MS

O-ring 26×4 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-VMQ70-26x4-MS
Dimensions: 26 × 4 mm
Material: VMQ · 70 Sh A

excl. VAT

From €0.58

€0.71 incl. VAT

In stockWarehouse Považská Bystrica

Minimum order is €5.00 excl. VAT. Below that you pay the difference as a top-up — add more pieces and you'll avoid it.

In stock in Považská Bystrica — delivery 1–3 business days from dispatch (SK), 3–5 days (EU)

Certifications

Add 9 more pieces — from 10 pcs the price is €0.52 per piece, ex. VAT.

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VMQ O-ring 26 × 4 mm (inner diameter 26 mm, cross-section 4 mm). Outer diameter 34 mm. Hardness 70 Sh A. Temperature range -60 °C to 200 °C. Standard ISO3601-26x4. Certifications: FDA, USP_CLASS_VI.

For a static seal of this size (outer diameter 34 mm), the ISO 3601-2 / Parker O-Ring Handbook ORD 5700 design guidance recommends a groove depth of about 3.12 mm and a groove width of about 5.2 mm for the 4 mm cross-section — roughly 22 % squeeze.

Inner diameter (ID): 26 mm
Cross-section (CS): 4 mm
Outer diameter (OD): 34 mm
Dimensions: 26x4
Material: VMQ
Hardness: 70 Sh A
Colour: red
Temperature range: -60 °C to 200 °C
Standard code: ISO3601-26x4
ISO 3601 size: 26x4
SKU: OR-VMQ70-26x4-MS
Country of origin: Germany
Availability: In stock

Technical specifications

Product data
Material	VMQ
Hardness (Shore A)	70 Sh A
Color	red
Certifications	FDA, USP_CLASS_VI
Indicative values for VMQ
Temperature range	-60 °C to 200 °C
Tensile strength	8 MPa
Ultimate elongation	400 %
Compression set	22 %
Specific gravity	1.25 g/cm³

These values apply to the VMQ material family as a whole, not to this specific size and hardness. Always verify suitability for your specific application before use.

Cross-standard size references

Standard code: ISO3601-26x4
ISO 3601: 26x4
DIN 3771: 26x4

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)

Price tiers

When buying	per piece
from 1 pcs	€0.58
from 10 pcs −10.3%	€0.52
from 100 pcs −25.9%	€0.43
from 1000 pcs −36.2%	€0.37

Prices exclude VAT. The volume discount is applied automatically in the cart.

Documentation

Download datasheet (PDF)

See all materials in size 26 × 4 mm

Frequently asked questions about this O-ring

What is the temperature range of a VMQ O-ring?

This VMQ O-ring is rated for continuous service of roughly -60 to 200 °C. The material tolerates brief temperature peaks higher, but near the limits service life drops significantly. If you operate at the edge of the range, ask our technician about a more suitable compound.

What media is VMQ resistant to?

VMQ (silicone/PTFE type) is physiologically harmless and covers a wide temperature range, so it suits food and medical applications. Its resistance to oils and mechanical abrasion is lower than NBR's — for oils, consider FVMQ or FKM. For a specific medium, check compatibility in our chemical-resistance chart.

What do the dimensions of this O-ring mean?

The size 26 × 4 mm gives the inner diameter × cross section. The inner diameter must fit the groove or rod; the cross section sets the seal thickness. When replacing, do not confuse inner diameter with outer diameter. If you search by standard (AS568, ISO 3601, JIS), use our cross-reference finder.

What does 70 Shore A hardness mean?

A hardness of 70 Shore A expresses the stiffness of the rubber: a lower number (50–60) is softer and seals an uneven surface better, a higher one (80–90) better resists pressure and extrusion from the groove. For most common applications the optimum is around 70 Shore A. Under high pressure, choose a harder material and possibly a back-up ring.

Read the VMQ material guide