NBR O‑Ring 125x6.3 mm - Nitrile 70 ShA Oil-Resistant Seal (Single Piece)

NBR O‑Ring 125x6.3 mm - Nitrile 70 ShA Oil-Resistant Seal (Single Piece)

The NBR O‑Ring 125x6.3 mm, crafted from nitrile rubber (NBR) with a hardness of 70 ShA, delivers excellent resistance to oil, grease, hydraulic fluids, and diesel fuels—perfect for demanding industrial and automotive applications.

With an internal diameter of 125 mm and cross-section of 6.3 mm, this oil-resistant o‑ring fits standard grooves (DIN 3771 / ISO 3601). It operates reliably across a wide temperature range (-30 °C to +135 °C), ensuring durability and longevity.

Made from cost-effective but robust NBR, this seal is ideal for radial rotary shaft seals, static flange seals, and pumping systems. It boasts:

• Tight sealing under pressure

• Durable performance under dynamic movement

• Compatibility with hydraulic and pneumatic circuits

• Excellent mechanical wear resistance

Ideal for use in pumps, compressors, hydraulic cylinders, valves, and automotive components.

🔑 Keywords

NBR o‑ring, 125x6.3 mm seal, 70 ShA nitrile o‑ring, oil-resistant o‑ring, simmerring o‑ring, radial rotary shaft seal, hydraulic seal

❓ FAQ

Q1: What does 70 ShA mean?
A: It represents the rubber hardness—70 Shore A NBR provides an ideal balance of elasticity and resilience against pressure and mechanical wear

Q2: Which fluids is this o‑ring compatible with?
A: It is resistant to mineral oils, lubricating greases, fuels, hydraulic fluids, and water. Not suitable for polar solvents or UV exposure.

Q3: What temperature range can it handle?
A: -30 °C up to +135 °C, depending on compound formulation.

Q4: Is this suitable for dynamic seals?
A: Yes; it performs well in both static and dynamic sealing applications, particularly for radial rotary shaft seals.

Q5: What industrial standards does it meet?
A: Compatible with DIN 3771 and ISO 3601 standard grooves for metric o‑rings