O-Ring 194x3,5 mm NBR 70 ShA - industrial sealing ring

Applications

The O‑Ring 194x3,5 mm NBR 70 ShA is precision-manufactured for demanding industrial sealing tasks where component reliability is critical. With an inner diameter of 194 mm and a cross-section of 3.5 mm, this rubber gasket is especially suited for large-format housings, hydraulic cylinders, pump casings, pneumatic actuators and bearing assemblies in heavy-duty equipment. Its material—NBR (nitrile butadiene rubber) with hardness 70 ShA—offers excellent resistance to oils, greases and moderate chemical exposure, making it a reliable choice for both static and lightly dynamic sealing applications. Recognised globally under metric standards (DIN 3771 / ISO 3601), this O-Ring supports standardisation across procurement chains.

Advantages

• High durability and oil-resistance: The NBR compound at 70 ShA is engineered for sustained performance in contact with mineral oils, lubricants, fuels and typical industrial fluids.

• Optimised dimension 194x3.5 mm: Designed to match widely used metric groove systems and large assemblies, the dimension ensures ease of replacement and cross-reference compatibility.

• Versatile sealing component: Functions as a standard O-Ring, rubber gasket or technical sealing ring—usable in static, semi-dynamic or hydrostatic environments—ideal for maintenance, production and B2B supply.

• Reduced downtime & improved inventory control: By standardising on this seal size and material, operations benefit from quicker replacements, reduced variety of spares and streamlined logistics.

• Industrial-scale readiness: Suited for engineering and procurement professionals managing heavy-duty installations where keywords such as “industrial sealing ring”, “technical seal”, “rubber gasket” and “O-Ring NBR 70A” drive search traffic.

Technical Data

• Type: O-Ring / rubber gasket / sealing ring

• Dimensions: Inner diameter (ID) = 194 mm ; Cross-section (CS) = 3.5 mm

• Material: NBR (nitrile butadiene rubber)

• Hardness: 70 ShA

• Typical use-cases: Hydraulic cylinders, pneumatic systems, machine housings, pump covers, bearing seals

• Key search terms: O-Ring 194x3.5 mm, rubber gasket NBR 70A, industrial sealing ring, technical seal oil-resistant
  This material specification positions the product for applications with service temperatures commonly ranging from -30 °C to +135 °C depending on medium and compound variant.

FAQ

Q1: Why choose NBR at 70 ShA for this O-Ring?
A1: NBR (nitrile rubber) at hardness 70 ShA offers a reliable balance of elasticity, wear resistance and chemical/oil compatibility. It is a proven material for sealing systems exposed to oils, lubricants and moderate temperatures.

Q2: What are typical applications for a 194x3.5 mm O-Ring?
A2: This dimension is common in large hydraulic cylinders, machine housing covers, pump/motor flanges and bearing units where a robust rubber gasket is required to maintain sealing under pressure and vibration.

Q3: How to determine if this O-Ring fits my equipment?
A3: Check the bore/shaft diameter (ID = 194 mm), the groove cross-section width (CS ≈ 3.5 mm), material compatibility with the working fluid (oil, grease, air) and the required hardness. If your assembly corresponds, the 194x3.5 mm NBR 70 ShA unit is a suitable choice.

Q4: Is this O-Ring suitable for oil-rich and lubrication environments?
A4: Yes. The NBR compound demonstrates excellent resistance to mineral oils, lubricants and many hydrocarbon-based fluids, making it suitable for hydraulic and pneumatic sealing applications.

Q5: What procurement advantage does this size offer for B2B supply?
A5: Using a standard size like 194x3.5 mm across multiple machines allows consolidating spares, reducing SKU count, simplifying logistics and ensuring faster replacements—all key in industrial procurement strategy.