NBR (Nitrile) O-rings
-30 °C to 100 °C
NBR (Nitrile Butadiene Rubber) is the most widespread elastomer for O-rings. Excellent resistance to mineral oils, fuels, and hydraulic fluids. An economical choice for most standard applications.
Products
3,759 products
- In stock
O-ring 4×3 NBR 70 Shore A
- Dimensions
- 4 × 3 mm · OD 10 mm
- Material
- NBR · 70 ShA
Product code OR-NBR70-4x3
€0.17excl. VAT
- In stock
O-ring 11×2.5 NBR 60 Shore A
- Dimensions
- 11 × 2.5 mm · OD 16 mm
- Material
- NBR · 60 ShA
Product code OR-NBR60-11x2-5
€1.25excl. VAT
- In stock
O-ring 11.6×2.3 NBR 80 Shore A
- Dimensions
- 11.6 × 2.3 mm · OD 16.2 mm
- Material
- NBR · 80 ShA
Product code OR-NBR80-11-6x2-3
€0.16excl. VAT
- In stock
O-ring 110×4 NBR 80 Shore A
- Dimensions
- 110 × 4 mm · OD 118 mm
- Material
- NBR · 80 ShA
Product code OR-NBR80-110x4
€0.64excl. VAT
- In stock
O-ring 118.7×8.6 NBR 80 Shore A
- Dimensions
- 118.7 × 8.6 mm · OD 135.9 mm
- Material
- NBR · 80 ShA
Product code OR-NBR80-118-7x8-6
€1.75excl. VAT
- In stock
O-ring 120×2 NBR 80 Shore A
- Dimensions
- 120 × 2 mm · OD 124 mm
- Material
- NBR · 80 ShA
Product code OR-NBR80-120x2
€0.12excl. VAT
- In stock
O-ring 19.6×2.3 NBR 80 Shore A
- Dimensions
- 19.6 × 2.3 mm · OD 24.2 mm
- Material
- NBR · 80 ShA
Product code OR-NBR80-19-6x2-3
€0.24excl. VAT
- In stock
O-ring 19×2.5 NBR 80 Shore A
- Dimensions
- 19 × 2.5 mm · OD 24 mm
- Material
- NBR · 80 ShA
Product code OR-NBR80-19x2-5
€0.17excl. VAT
- In stock
O-ring 21.3×4.6 NBR 80 Shore A
- Dimensions
- 21.3 × 4.6 mm · OD 30.5 mm
- Material
- NBR · 80 ShA
Product code OR-NBR80-21-3x4-6
€0.17excl. VAT
- In stock
O-ring 23.3×4.6 NBR 80 Shore A
- Dimensions
- 23.3 × 4.6 mm · OD 32.5 mm
- Material
- NBR · 80 ShA
Product code OR-NBR80-23-3x4-6
€0.16excl. VAT
- In stock
O-ring 28×3 NBR 80 Shore A
- Dimensions
- 28 × 3 mm · OD 34 mm
- Material
- NBR · 80 ShA
Product code OR-NBR80-28x3
€0.17excl. VAT
- In stock
O-ring 34.3×4.6 NBR 80 Shore A
- Dimensions
- 34.3 × 4.6 mm · OD 43.5 mm
- Material
- NBR · 80 ShA
Product code OR-NBR80-34-3x4-6
€0.33excl. VAT
- In stock
O-ring 35.3×4.6 NBR 80 Shore A
- Dimensions
- 35.3 × 4.6 mm · OD 44.5 mm
- Material
- NBR · 80 ShA
Product code OR-NBR80-35-3x4-6
€0.33excl. VAT
- In stock
O-ring 39.1×5.8 NBR 80 Shore A
- Dimensions
- 39.1 × 5.8 mm · OD 50.7 mm
- Material
- NBR · 80 ShA
Product code OR-NBR80-39-1x5-8
€0.43excl. VAT
- In stock
O-ring 45.1×5.8 NBR 80 Shore A
- Dimensions
- 45.1 × 5.8 mm · OD 56.7 mm
- Material
- NBR · 80 ShA
Product code OR-NBR80-45-1x5-8
€0.50excl. VAT
- In stock
O-ring 49.1×5.8 NBR 80 Shore A
- Dimensions
- 49.1 × 5.8 mm · OD 60.7 mm
- Material
- NBR · 80 ShA
Product code OR-NBR80-49-1x5-8
€1.21excl. VAT
- In stock
O-ring 59.1×5.8 NBR 80 Shore A
- Dimensions
- 59.1 × 5.8 mm · OD 70.7 mm
- Material
- NBR · 80 ShA
Product code OR-NBR80-59-1x5-8
€2.01excl. VAT
- In stock
O-ring 6.6×2.3 NBR 80 Shore A
- Dimensions
- 6.6 × 2.3 mm · OD 11.2 mm
- Material
- NBR · 80 ShA
Product code OR-NBR80-6-6x2-3
€0.17excl. VAT
- In stock
O-ring 63×5.3 NBR 80 Shore A
- Dimensions
- 63 × 5.3 mm · OD 73.6 mm
- Material
- NBR · 80 ShA
Product code OR-NBR80-63x5-3
€0.67excl. VAT
- In stock
O-ring 64.1×5.8 NBR 80 Shore A
- Dimensions
- 64.1 × 5.8 mm · OD 75.7 mm
- Material
- NBR · 80 ShA
Product code OR-NBR80-64-1x5-8
€0.51excl. VAT
- In stock
O-ring 74.1×5.8 NBR 80 Shore A
- Dimensions
- 74.1 × 5.8 mm · OD 85.7 mm
- Material
- NBR · 80 ShA
Product code OR-NBR80-74-1x5-8
€0.68excl. VAT
- In stock
O-ring 82.27×1.78 NBR 80 Shore A
- Dimensions
- 82.27 × 1.78 mm · OD 85.83 mm
- Material
- NBR · 80 ShA
Product code OR-NBR80-82-27x1-78
€0.33excl. VAT
- In stock
O-ring 84.1×5.8 NBR 80 Shore A
- Dimensions
- 84.1 × 5.8 mm · OD 95.7 mm
- Material
- NBR · 80 ShA
Product code OR-NBR80-84-1x5-8
€0.85excl. VAT
- In stock
O-ring 89.1×5.8 NBR 80 Shore A
- Dimensions
- 89.1 × 5.8 mm · OD 100.7 mm
- Material
- NBR · 80 ShA
Product code OR-NBR80-89-1x5-8
€0.83excl. VAT
Temperature and chemical compatibility
Temperature and chemical compatibility
Temperature range: -30 °C to +100 °C (short-term up to +120 °C).
Featured products
Typical applications: hydraulic cylinders, pneumatic systems, pumps, gearboxes, fuel pumps, automotive industry, general engineering.
NBR (Nitrile)
Each elastomer has different mechanical and chemical properties.
NBR (Nitrile) — properties and applications
NBR (nitrile rubber) is the most widely used and most affordable material for O-rings — for most engineering operations it is the standard first choice, with a reference price of 1×. It works in a temperature range of −30 to +100 °C (briefly up to +120 °C) and its typical hardness is 70 ShA, which makes it a universal sealing element for ordinary conditions. It's a reliable workhorse that covers the vast majority of standard seals without any needless overpaying.
NBR shows its strength with petroleum-based substances: it has excellent resistance to mineral oils, hydraulic fluids and fuels (petrol, diesel), and it copes well with water and air too. This is precisely why NBR O-rings are the go-to choice in hydraulics, pneumatics, fuel and oil systems, and general engineering. Its properties depend on the acrylonitrile (ACN) content: a higher proportion improves oil resistance, while a lower one improves flexibility at low temperatures — so for a specific application we select a tailored compound.
It does, however, have clear limits. Don't use NBR for steam and hot water, glycol-based brake fluids (DOT 3/4), ester and synthetic oils, polar solvents, or strong acids and bases. Watch out for ozone, UV and weathering too: in direct sunlight NBR ages and cracks, so it isn't ideal for a permanently outdoor environment. These limitations determine the service life of the seal — with an aggressive medium, don't experiment; choose a more suitable material instead.
Compared with the other materials, NBR is clearly the best price-to-performance ratio for oil and fuel applications at moderate temperatures. When you need a higher temperature or better wear resistance, step up to HNBR; when aggressive chemistry or high heat come into play, to FKM (Viton®); for water and steam, to EPDM. The conclusion is simple: if you're sealing mineral oil, hydraulics or fuel in the −30 to +100 °C range and want a proven O-ring at the best price, reach for NBR — and save the other materials for the cases where NBR runs up against its limits.
Browse all O-rings across every material.
O-ring material comparison
Indicative values for a quick comparison. Temperature ranges are conservative (continuous service); for a specific medium always verify compatibility or consult a technician.
| Material | Temperature range | Mineral oil | Water | Acid | Fuel | Hardness (Sh A) | Relative price (vs NBR) |
|---|---|---|---|---|---|---|---|
| NBR — your selection | -30 – 100 °C | Excellent | Limited | Avoid | Excellent | 70 Sh A | 1.0× |
| HNBR | -30 – 150 °C | Excellent | Limited | Avoid | Excellent | 75 Sh A | 3.0× |
| FKM | -20 – 200 °C | Excellent | Limited | Excellent | Excellent | 75 Sh A | 5.0× |
| FFKM | -20 – 260 °C | Excellent | Excellent | Excellent | Excellent | 75 Sh A | 50.0× |
| EPDM | -40 – 130 °C | Unsafe | Excellent | Excellent | Unsafe | 70 Sh A | 1.2× |
| VMQ | -60 – 200 °C | Avoid | Excellent | Avoid | Avoid | 70 Sh A | 3.5× |
| PU | -40 – 80 °C | Excellent | Limited | Avoid | Limited | 90 Sh A | 2.0× |