OR-EPDM70-75x2-5

O-ring 75×2.5 EPDM 70 Shore A

This EPDM O-ring is the correct choice for potable water, steam, brake fluids and all applications outside mineral oils.

Product code: OR-EPDM70-75x2-5
Dimensions: 75 × 2.5 mm
Material: EPDM · 70 Sh A

excl. VAT

From €1.00

€1.23 incl. VAT

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The minimum order is €5.00 excl. VAT. For smaller orders you pay the difference as a small-order fee — add more pieces to avoid it.

Available to order — approx. 5 days

Certifications

Add 9 more pieces — from 10 pcs the price is €0.90 per piece, excl. VAT.

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EPDM O-ring 75 × 2.5 mm (inner diameter 75 mm, cross-section 2.5 mm). Outer diameter 80 mm. Hardness 70 Sh A. Temperature range -40 °C to 130 °C. Standard ISO3601-75x2.5. Certifications: WRAS, KTW.

Inner diameter (ID): 75 mm
Cross-section (CS): 2.5 mm
Outer diameter (OD): 80 mm
Size: 75x2.5
Material: EPDM
Hardness: 70 Sh A
Color: black
Temperature range: -40 °C to 130 °C
Standard code: ISO3601-75x2.5
ISO 3601 size: 75x2.5
Product code: OR-EPDM70-75x2-5
Country of origin: Germany
Availability: Available to order

Technical specifications

Product data
Material	EPDM
Hardness (Shore A)	70 Sh A
Color	black
Certifications	WRAS, KTW
Indicative values for EPDM
Temperature range	-40 °C to 130 °C
Tensile strength	12 MPa
Ultimate elongation	350 %
Compression set	20 %
Density	1.15 g/cm³

These values apply to the EPDM 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: ISO3601-75x2.5
ISO 3601: 75x2.5
DIN 3771: 75x2.5

Material properties

EPDM is an ethylene propylene diene rubber with excellent resistance to water, steam, polar solvents, glycol-based brake fluids, ester oils, ozone, UV radiation and weathering. Operating temperature range is -40 °C to +130 °C (sulfur-cured), peroxide-cured grade up to +150 °C and for steam. It is not resistant to mineral oils, fuels and most hydrocarbon oils. Available grades meet WRAS, KTW, DVGW, NSF 61 potable water approvals and EPDM-FDA for food contact.

Material: EPDM
Chemical name: Ethylene Propylene Diene Monomer
Also known as: EPM, ethylene-propylene
Trade names: Arlanxeo Keltan, Dow Nordel, Lion Elastomers Royalene

Suitable for various industries

EPDM O-rings are used in potable water systems, steam lines, HVAC installations, brake systems (DOT 3/4/5.1), solar assemblies, roofing applications and outdoor enclosures. Typical applications: water fittings, heat exchangers, automotive brake lines, pharmaceutical CIP/SIP (peroxide-cured).

Application notes

The only choice for potable water and glycol-based brake fluids (DOT). Not suitable for mineral oils or fuels — substituting NBR causes immediate failure. For steam use peroxide-cured grade.

Advantages

Resistant to potable water and steam (peroxide-cured grade)
Compatible with glycol-based brake fluid
Excellent ozone, UV and weathering resistance
Operating range -40 °C to +130 °C
Available grades with WRAS, KTW, NSF 61 for drinking water

Price tiers

Quantity	per piece
from 1 pc	€1.00
from 10 pcs −10%	€0.90
from 100 pcs −25%	€0.75
from 1,000 pcs −35%	€0.65

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

Documentation

Download datasheet (PDF)

See all materials in size 75 × 2.5 mm

Frequently asked questions about this O-ring

What is the temperature range of an EPDM O-ring?

This EPDM O-ring is rated for continuous service of roughly -40 to 130 °C. The material can withstand brief temperature peaks above this range, 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 EPDM resistant to?

EPDM resists water, steam, glycol-based brake fluids (DOT 3/4/5.1), and water-based chemicals, and has excellent resistance to ozone and weathering. It is, however, NOT compatible with mineral oils and fuels — for those, use NBR or FKM. For a specific medium, check compatibility in our chemical-resistance chart.

What do the dimensions of this O-ring mean?

The size 75 × 2.5 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. Harder is therefore not simply better — it is a trade-off driven by pressure, groove clearance, and material: 70 ShA conforms to the surface better and seals well at standard pressures, while 80–90 ShA suits cases with higher pressure or a risk of abrasion and extrusion into the gap. Under high pressure, choose a harder material and possibly a back-up ring.

Read the EPDM material guide