O-RING · NBR
O-ring 491.75 × 3.5 mm · NBR 70 · 20A7
O-ring with an inside diameter of 491.75 mm and a cross-section of 3.5 mm (491.75x3.5), in NBR 70 Shore A to NF L 17-120 (material code 20A7). Nominal outside diameter 498.75 mm, weight 18.861 g. Reference 5331-14-326-4338.
| Oringaero reference | OA-20A7-491.75X3.5 |
|---|---|
| Material code | 20A7 — NBR |
| Material standard | NF L 17-120 |
| Hardness | 70 Shore A |
| Inside Ø | 491,75 ± 2,54 mm |
| Cross-section | 3,5 ± 0,10 mm |
| Nominal outside Ø | 498,75 mm |
| Colour | Black |
| Weight | 18.861 g |
| Continuous temperature¹ | −30 à +120 °C |
| Short-term temperature¹ | −30 à +140 °C |
| Tolerances | ISO 3601-1:2012 — class A, annex A |
| Surface imperfections | ISO 3601-3:2005 + Amd 1:2018 — grade N |
| Reference | 5331-14-326-4338 |
¹ Service temperatures to NF L 17-120; the short-term temperature applies to brief exposure.
- Manufacturer: JUNGA Ltd, EN 9100 certified
- Lead time: 2 to 4 weeks depending on quantity
- Packaging: individual bags, labelled to NF L
- Price: on quotation; state the conformity documents you need
Application and inspection
Mineral-based or synthetic-hydrocarbon hydraulic fluids.
Values measured at qualification of compound 20A7: tensile strength 16.5 MPa, elongation at break 348 %, compression set 23.2 % (70 h at 125 °C), density 1.26 g/cm³.