Is the O-ring seal (range 2.9x1.78 Ã· 17.3x2.4), NBR70 suitable for general hydraulic and pneumatic applications?

Yes. The O-ring seal (range 2.9x1.78 Ã· 17.3x2.4), NBR70 Format is suitable for many general hydraulic and pneumatic applications. NBR (nitrile rubber) with 70 Shore A hardness offers good resistance to mineral oils, hydraulic fluids, air, and many common greases, making it a typical choice for static and dynamic sealing in general industrial systems. The size range (Ã 2.9Ã1.78 up to Ã 17.3Ã2.4 mm) covers small to medium ports and fittings commonly used in pneumatic valves, cylinders, and low- to moderate-pressure hydraulic connections. Limitations: NBR is less resistant to high temperatures (generally up to ~100â120Â°C depending on specific compound), aromatic hydrocarbons, ketones, esters, strong acids/alkalis, and some refrigerants. For high-pressure hydraulic systems, aggressive fluids, extreme temperatures, or long-term exposure to ozone/UV, alternative materials (FKM/Viton, EPDM, PU, HNBR) or different hardness may be preferable. Conclusion: For general-purpose hydraulic and pneumatic uses with mineral oils, air, moderate pressures, and normal temperatures, the O-ring seal (range 2.9x1.78 Ã· 17.3x2.4), NBR70 Format is an appropriate choice.

What temperature range can the O-ring seal (range 2.9x1.78 Ã· 17.3x2.4), NBR70 reliably operate in?

O-ring seal (range 2.9x1.78 Ã· 17.3x2.4), NBR70 can reliably operate in a temperature range of approximately -40Â°C to +120Â°C. Short-term exposures up to about +125Â°C may be tolerated, but prolonged use above +100â110Â°C can accelerate aging and reduce sealing performance. For continuous service near the upper limit or exposure to aggressive conditions, consider verification by testing or a different elastomer.

Does the O-ring seal (range 2.9x1.78 Ã· 17.3x2.4), NBR70 resist common automotive oils and fuels?

Yes. O-ring seal (range 2.9x1.78 Ã· 17.3x2.4), NBR70 is resistant to most common automotive oils and fuels. NBR (nitrile rubber) with 70 Shore A hardness offers good compatibility with petroleum-based oils, hydraulic fluids, gasoline, diesel and automatic transmission fluids under typical temperature and pressure conditions. It provides reliable sealing performance in fuel and oil systems, engine components, and transmissions where exposure is to mineral oils and aliphatic hydrocarbons. Limitations: NBR70 has reduced resistance to aromatic hydrocarbons (e.g., toluene, xylene), certain oxygenated fuels (high-ethanol blends, MTBE) and some synthetic esters or phosphate ester-based fluids; prolonged exposure to these can cause swelling, hardening or cracking. Temperature extremes beyond roughly -30Â°C to +100Â°C (service limits vary) also impair performance. For aggressive fuels, high ethanol content, or high-temperature/high-pressure applications consider alternative elastomers (e.g., FKM, HNBR, EPDM) or validate compatibility with specific fluids and operating conditions. Conclusion: For typical automotive oils and conventional gasoline/diesel, O-ring seal (range 2.9x1.78 Ã· 17.3x2.4), NBR70 is suitable; verify for ethanol-rich fuels, aromatics or specialized fluids and under extreme temperatures.

O-ring seal (range 2.9×1.78 ÷ 17.3×2.4), NBR70

All products, General purpose seals/

O-ring seal (range 2.9x1.78 ÷ 17.3x2.4), NBR70

Additional information

Maximum operating temperature [°C]	100
Minimum operating temperature [°C]	-30
Standard length [m]	6, 60/ 120

Circular cross-section gasket (o-ring) for general use (range 2.9×1.78 ÷ 17.3×2.4). Material: NBR, hardness 70 Shore.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
TI-UO-002,9X1,78-N70	O-ring 2.9x1.78 NBR70	-	-	In stock	Enquiry
TI-UO-003,3X2,4-N70	O-ring 3.3x2.4 NBR70	-	-	In stock	Enquiry
TI-UO-003,68X1,78-N70	O-ring 3.68x1.78 NBR70	-	-	In stock	Enquiry
TI-UO-003X1,5-N70	O-ring 3x1.5 NBR70	-	-	In stock	Enquiry
TI-UO-003X1-N70	O-ring 3x1 NBR70	-	-	In stock	Enquiry
TI-UO-003X2-N70	O-ring 3x2 NBR70	-	-	In stock	Enquiry
TI-UO-004,48X1,78-N70	O-ring 4.48x1.78 NBR70	-	-	In stock	Enquiry
TI-UO-004X1,5-N70	O-ring 4x1.5 NBR70	-	-	In stock	Enquiry
TI-UO-004X1-N70	O-ring 4x1 NBR70	-	-	In stock	Enquiry
TI-UO-004X2-N70	O-ring 4x2 NBR70	-	-	In stock	Enquiry
TI-UO-005,28X1,78-N70	O-ring 5.28x1.78 NBR70	-	-	In stock	Enquiry
TI-UO-005X1,5-N70	O-ring 5x1.5 NBR70	-	-	In stock	Enquiry
TI-UO-005X1-N70	O-ring 5x1 NBR70	-	-	In stock	Enquiry
TI-UO-005X2,5-N70	O-ring 5x2.5 NBR70	-	-	In stock	Enquiry
TI-UO-005X2-N70	O-ring 5x2 NBR70	-	-	In stock	Enquiry
TI-UO-005X3-N70	O-ring 5x3 NBR70	-	-	In stock	Enquiry
TI-UO-006,07X1,78-N70	O-ring 6.07x1.78 NBR70	-	-	In stock	Enquiry
TI-UO-006,3X2,4-N70	O-ring 6.3x2.4 NBR70	-	-	In stock	Enquiry
TI-UO-006X1,5-N70	O-ring 6x1.5 NBR70	-	-	In stock	Enquiry
TI-UO-006X1-N70	O-ring 6x1 NBR70	-	-	In stock	Enquiry
TI-UO-006X2,5-N70	O-ring 6x2.5 NBR70	-	-	In stock	Enquiry
TI-UO-006X2-N70	O-ring 6x2 NBR70	-	-	In stock	Enquiry
TI-UO-006X3-N70	O-ring 6x3 NBR70	-	-	In stock	Enquiry
TI-UO-006X4-N70	O-ring 6x4 NBR70	-	-	In stock	Enquiry
TI-UO-007,3X2,4-N70	O-ring 7.3x2.4 NBR70	-	-	In stock	Enquiry
TI-UO-007,66X1,78-N70	O-ring 7.66x1.78 NBR70	-	-	In stock	Enquiry
TI-UO-007X1,5-N70	O-ring 7x1.5 NBR70	-	-	In stock	Enquiry
TI-UO-007X1-N70	O-ring 7x1 NBR70	-	-	In stock	Enquiry
TI-UO-007X2-N70	O-ring 7x2 NBR70	-	-	In stock	Enquiry
TI-UO-008,3X2,4-N70	O-ring 8.3x2.4 NBR70	-	-	In stock	Enquiry
TI-UO-0082,2-N70	O-ring 8x2.2 NBR70	-	-	In stock	Enquiry
TI-UO-008X1,8-N70	O-ring 8x1.8 NBR70	-	-	In stock	Enquiry
TI-UO-008X1-N70	O-ring 8x1 NBR70	-	-	In stock	Enquiry
TI-UO-008X2-N70	O-ring 8x2 NBR70	-	-	In stock	Enquiry
TI-UO-009,19X2,62-N70	O-ring 9.19x2.62 NBR70	-	-	In stock	Enquiry
TI-UO-009,25X1,78-N70	O-ring 9.25x1.78 NBR70	-	-	In stock	Enquiry
TI-UO-009,3X2,4-N70	O-ring 9.3x2.4 NBR70	-	-	In stock	Enquiry
TI-UO-009X1,5-N70	O-ring 9x1.5 NBR70	-	-	In stock	Enquiry
TI-UO-009X1,8-N70	O-ring 9x1.8 NBR70	-	-	In stock	Enquiry
TI-UO-009X2,5-N70	O-ring 9x2.5 NBR70	-	-	In stock	Enquiry
TI-UO-009X2-N70	O-ring 9x2 NBR70	-	-	In stock	Enquiry
TI-UO-009X3-N70	O-ring 9x3 NBR70	-	-	In stock	Enquiry
TI-UO-010,3X2,4-N70	O-ring 10.3x2.4 NBR70	-	-	In stock	Enquiry
TI-UO-010,78X2,62-N70	O-ring 10.78x2.62 NBR70	-	-	In stock	Enquiry
TI-UO-010X1,5-N70	O-ring 10x1.5 NBR70	-	-	In stock	Enquiry
TI-UO-010X1,8-N70	O-ring 10x1.8 NBR70	-	-	In stock	Enquiry
TI-UO-010X1-N70	O-ring 10x1 NBR70	-	-	In stock	Enquiry
TI-UO-010X2,2-N70	O-ring 10x2.2 NBR70	-	-	In stock	Enquiry
TI-UO-010X2,5-N70	O-ring 10x2.5 NBR70	-	-	In stock	Enquiry
TI-UO-010X2-N70	O-ring 10x2 NBR70	-	-	In stock	Enquiry
TI-UO-010X3,5-N70	O-ring 10x3.5 NBR70	-	-	In stock	Enquiry
TI-UO-010X3-N70	O-ring 10x3 NBR70	-	-	In stock	Enquiry
TI-UO-010X4-N70	O-ring 10x4 NBR70	-	-	In stock	Enquiry
TI-UO-011,3X2,4-N70	O-ring 11.3x2.4 NBR70	-	-	In stock	Enquiry
TI-UO-011X1,5-N70	O-ring 11x1.5 NBR70	-	-	In stock	Enquiry
TI-UO-011X2,5-N70	O-ring 11x2.5 NBR70	-	-	In stock	Enquiry
TI-UO-011X2-N70	O-ring 11x2 NBR70	-	-	In stock	Enquiry
TI-UO-011X3,5-N70	O-ring 11x3.5 NBR70	-	-	In stock	Enquiry
TI-UO-011X3-N70	O-ring 11x3 NBR70	-	-	In stock	Enquiry
TI-UO-011X4-N70	O-ring 11x4 NBR70	-	-	In stock	Enquiry
TI-UO-012,37X2,62-N70	O-ring 12.37x2.62 NBR70	-	-	In stock	Enquiry
TI-UO-012,3X2,4-N70	O-ring 12.3x2.4 NBR70	-	-	In stock	Enquiry
TI-UO-012X1,5-N70	O-ring 12x1.5 NBR70	-	-	In stock	Enquiry
TI-UO-012X1,8-N70	O-ring 12x1.8 NBR70	-	-	In stock	Enquiry
TI-UO-012X2,5-N70	O-ring 12x2.5 NBR70	-	-	In stock	Enquiry
TI-UO-012X2-N70	O-ring 12x2 NBR70	-	-	In stock	Enquiry
TI-UO-012X3,5-N70	O-ring 12x3.5 NBR70	-	-	In stock	Enquiry
TI-UO-012X3-N70	O-ring 12x3 NBR70	-	-	In stock	Enquiry
TI-UO-012X4-N70	O-ring 12x4 NBR70	-	-	In stock	Enquiry
TI-UO-013,3X2,4-N70	O-ring 13.3x2.4 NBR70	-	-	In stock	Enquiry
TI-UO-013,95X2,62-N70	O-ring 13.95x2.62 NBR70	-	-	In stock	Enquiry
TI-UO-013X1,5-N70	O-ring 13x1.5 NBR70	-	-	In stock	Enquiry
TI-UO-014X1,5-N70	O-ring 14x1.5 NBR70	-	-	In stock	Enquiry
TI-UO-014X2,5-N70	O-ring 14x2.5 NBR70	-	-	In stock	Enquiry
TI-UO-014X2-N70	O-ring 14x2 NBR70	-	-	In stock	Enquiry
TI-UO-014X3,5-N70	O-ring 14x3.5 NBR70	-	-	In stock	Enquiry
TI-UO-014X3-N70	O-ring 14x3 NBR70	-	-	In stock	Enquiry
TI-UO-014X4-N70	O-ring 14x4 NBR70	-	-	In stock	Enquiry
TI-UO-015,3X2,4-N70	O-ring 15.3x2.4 NBR70	-	-	In stock	Enquiry
TI-UO-015,54X2,62-N70	O-ring 15.54x2.62 NBR70	-	-	In stock	Enquiry
TI-UO-015X1,5-N70	O-ring 15x1.5 NBR70	-	-	In stock	Enquiry
TI-UO-015X2,65-N70	O-ring 15x2.65 NBR70	-	-	In stock	Enquiry
TI-UO-015X2-N70	O-ring 15x2 NBR70	-	-	In stock	Enquiry
TI-UO-015X3-N70	O-ring 15x3 NBR70	-	-	In stock	Enquiry
TI-UO-016,3X2,4-N70	O-ring 16.3x2.4 NBR70	-	-	In stock	Enquiry
TI-UO-016X1,5-N70	O-ring 16x1.5 NBR70	-	-	In stock	Enquiry
TI-UO-016X1,8-N70	O-ring 16x1.8 NBR70	-	-	In stock	Enquiry
TI-UO-016X2,5-N70	O-ring 16x2.5 NBR70	-	-	In stock	Enquiry
TI-UO-016X2-N70	O-ring 16x2 NBR70	-	-	In stock	Enquiry
TI-UO-016X3-N70	O-ring 16x3 NBR70	-	-	In stock	Enquiry
TI-UO-017,13X2,62-N70	O-ring 17.13x2.62 NBR70	-	-	In stock	Enquiry
TI-UO-017,3X2,4-N70	O-ring 17.3x2.4 NBR70	-	-	In stock	Enquiry
TI-UO-017X1,5-N70	O-ring 17x1.5 NBR70	-	-	In stock	Enquiry
TI-UO-017X2,5-N70	O-ring 17x2.5 NBR70	-	-	In stock	Enquiry
TI-UO-017X3,5-N70	O-ring 17x3.5 NBR70	-	-	In stock	Enquiry
TI-UO-017X3-N70	O-ring 17x3 NBR70	-	-	In stock	Enquiry