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 123.7×8.6 NBR 80 Shore A
- Dimensions
- 123.7 × 8.6 mm · OD 140.9 mm
- Material
- NBR · 80 ShA
Product code OR-NBR80-123-7x8-6
€1.70excl. VAT
- In stock
O-ring 160×7 NBR 80 Shore A
- Dimensions
- 160 × 7 mm · OD 174 mm
- Material
- NBR · 80 ShA
Product code OR-NBR80-160x7
€1.42excl. VAT
- In stock
O-ring 164.69×3.53 NBR 80 Shore A
- Dimensions
- 164.69 × 3.53 mm · OD 171.75 mm
- Material
- NBR · 80 ShA
Product code OR-NBR80-164-69x3-53
€0.75excl. VAT
- In stock
O-ring 200×3.55 NBR 80 Shore A
- Dimensions
- 200 × 3.55 mm · OD 207.1 mm
- Material
- NBR · 80 ShA
Product code OR-NBR80-200x3-55
€1.50excl. VAT
- In stock
O-ring 100×2 NBR 90 Shore A
- Dimensions
- 100 × 2 mm · OD 104 mm
- Material
- NBR · 90 ShA
Product code OR-NBR90-100x2
€1.00excl. VAT
- In stock
O-ring 100×3.5 NBR 90 Shore A
- Dimensions
- 100 × 3.5 mm · OD 107 mm
- Material
- NBR · 90 ShA
Product code OR-NBR90-100x3-5
€1.25excl. VAT
- In stock
O-ring 101.27×2.62 NBR 90 Shore A
- Dimensions
- 101.27 × 2.62 mm · OD 106.51 mm
- Material
- NBR · 90 ShA
Product code OR-NBR90-101-27x2-62
€0.60excl. VAT
- In stock
O-ring 11.99×1.78 NBR 90 Shore A
- Dimensions
- 11.99 × 1.78 mm · OD 15.55 mm
- Material
- NBR · 90 ShA
Product code OR-NBR90-11-99x1-78
€0.09excl. VAT
- In stock
O-ring 117×4 NBR 90 Shore A
- Dimensions
- 117 × 4 mm · OD 125 mm
- Material
- NBR · 90 ShA
Product code OR-NBR90-117x4
€0.68excl. VAT
- In stock
O-ring 12×2 NBR 90 Shore A
- Dimensions
- 12 × 2 mm · OD 16 mm
- Material
- NBR · 90 ShA
Product code OR-NBR90-12x2
€0.17excl. VAT
- In stock
O-ring 14×1.6 NBR 90 Shore A
- Dimensions
- 14 × 1.6 mm · OD 17.2 mm
- Material
- NBR · 90 ShA
Product code OR-NBR90-14x1-6
€0.13excl. VAT
- In stock
O-ring 14×2.5 NBR 90 Shore A
- Dimensions
- 14 × 2.5 mm · OD 19 mm
- Material
- NBR · 90 ShA
Product code OR-NBR90-14x2-5
€0.17excl. VAT
- In stock
O-ring 15×2.5 NBR 90 Shore A
- Dimensions
- 15 × 2.5 mm · OD 20 mm
- Material
- NBR · 90 ShA
Product code OR-NBR90-15x2-5
€0.14excl. VAT
- In stock
O-ring 15×3.5 NBR 90 Shore A
- Dimensions
- 15 × 3.5 mm · OD 22 mm
- Material
- NBR · 90 ShA
Product code OR-NBR90-15x3-5
€0.25excl. VAT
- In stock
O-ring 16.36×2.21 NBR 90 Shore A
- Dimensions
- 16.36 × 2.21 mm · OD 20.78 mm
- Material
- NBR · 90 ShA
Product code OR-NBR90-16-36x2-21
€0.17excl. VAT
- In stock
O-ring 16×1.5 NBR 90 Shore A
- Dimensions
- 16 × 1.5 mm · OD 19 mm
- Material
- NBR · 90 ShA
Product code OR-NBR90-16x1-5
€0.17excl. VAT
- In stock
O-ring 16×3 NBR 90 Shore A
- Dimensions
- 16 × 3 mm · OD 22 mm
- Material
- NBR · 90 ShA
Product code OR-NBR90-16x3
€0.17excl. VAT
- In stock
O-ring 17×1.5 NBR 90 Shore A
- Dimensions
- 17 × 1.5 mm · OD 20 mm
- Material
- NBR · 90 ShA
Product code OR-NBR90-17x1-5
€0.17excl. VAT
- In stock
O-ring 19×2.5 NBR 90 Shore A
- Dimensions
- 19 × 2.5 mm · OD 24 mm
- Material
- NBR · 90 ShA
Product code OR-NBR90-19x2-5
€0.17excl. VAT
- In stock
O-ring 21×2 NBR 90 Shore A
- Dimensions
- 21 × 2 mm · OD 25 mm
- Material
- NBR · 90 ShA
Product code OR-NBR90-21x2
€0.17excl. VAT
- In stock
O-ring 24×2 NBR 90 Shore A
- Dimensions
- 24 × 2 mm · OD 28 mm
- Material
- NBR · 90 ShA
Product code OR-NBR90-24x2
€0.17excl. VAT
- In stock
O-ring 24×3 NBR 90 Shore A
- Dimensions
- 24 × 3 mm · OD 30 mm
- Material
- NBR · 90 ShA
Product code OR-NBR90-24x3
€0.17excl. VAT
- In stock
O-ring 25×2 NBR 90 Shore A
- Dimensions
- 25 × 2 mm · OD 29 mm
- Material
- NBR · 90 ShA
Product code OR-NBR90-25x2
€0.08excl. VAT
- In stock
O-ring 25×3.5 NBR 90 Shore A
- Dimensions
- 25 × 3.5 mm · OD 32 mm
- Material
- NBR · 90 ShA
Product code OR-NBR90-25x3-5
€0.33excl. 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× |