O-RING · CR
O-ring 54 × 2 mm · CR 40 · 31B4
O-ring with an inside diameter of 54 mm and a cross-section of 2 mm (54x2), in CR 40 Shore A to NF L 17-131 (material code 31B4). Nominal outside diameter 58 mm, weight 0.707 g.
| Oringaero reference | OA-31B4-54X2 |
|---|---|
| Material code | 31B4 — CR |
| Material standard | NF L 17-131 |
| Hardness | 40 Shore A |
| Inside Ø | 54 ± 0.46 mm |
| Cross-section | 2 ± 0.08 mm |
| Nominal outside Ø | 58 mm |
| Colour | Black |
| Weight | 0.707 g |
| Continuous temperature¹ | −40 to +100 °C |
| Short-term temperature¹ | −40 to +120 °C |
| Tolerances | ISO 3601-1:2012 — class A, annex A |
| Surface imperfections | ISO 3601-3:2005 + Amd 1:2018 — grade N |
¹ Service temperatures to NF L 17-131; 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
Weathering; qualified in IRM 901 oil.
Values measured at qualification of compound 31B4: tensile strength 11.8 MPa, elongation at break 432 %, compression set 35.7 % (70 h at 100 °C), density 1.28 g/cm³.