O-Ring 2.3x0.8 NBR
8 pcs.
€1.33
(net)
Price for: 100pcs.
For reliable, compact, and durable O-Ring 2.3x0.8 NBR 70 ShA (pack of 100) units tailored for industrial, hydraulic, pneumatic, and OEM use — order now. Stocked at our Lublin warehouse, ul. Smoluchowskiego 1, building 4, with 24h delivery available across Poland. Secure your supply of high-performance rubber sealing rings today.
Applications & Industrial Uses
The O-Ring 2.3x0.8 NBR 70 ShA is a compact, precision sealing ring designed for static and light dynamic sealing tasks in demanding environments. It is ideal for use in hydraulic micro-components, pneumatic valves, instrumentation, micro-pumps, sensor ports, small-diameter piping systems, and OEM components in automation and robotics. As a rubber gasket and industrial sealing element, it provides reliable sealing in oil, fuel, lubrication, and moderate pressure fluid systems.
Because of its small cross-section (0.8 mm) and inner diameter of 2.3 mm, this O-ring is often applied in microfluidic modules, diaphragm mechanisms, miniature actuators, or control modules where space is constrained but sealing integrity is crucial.
Advantages & Key Features
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Material: NBR (Nitrile Rubber) with 70 Shore A hardness — strikes a solid balance between flexibility and resilience, offering durability under compression and resistance to deformation.
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Compact size & precision tolerances — inner diameter 2.3 mm, cross-section 0.8 mm; outer diameter ~3.9 mm (2.3 + 2x0.8) as typical calculation.
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Excellent resistance to oils / fuels / greases — well suited to contact with mineral oils, hydraulic fluids, lubricants, and many petroleum-based media.
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Moderate temperature range — typically -30 °C to +100 °C (in some cases to +120 °C for short duration), depending on formulation.
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Low compression set & good mechanical stability — helps preserve sealing force over repeated cycles.
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Bulk packaging (100 pcs) — cost-effective and ready for frequent maintenance or large-scale deployment in production.
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Compact footprint — minimal material usage per unit yields efficient storage and shipping.
Technical Data & Specifications
| Parameter | Value |
|---|---|
| Inner Diameter (ID) | 2.30 mm |
| Cross-Section / Thickness (CS) | 0.80 mm |
| Outer Diameter (OD) | ~ 3.90 mm (nominal) |
| Material | NBR (nitrile butadiene rubber) |
| Hardness | 70 Shore A |
| Working Temperature | -30 °C to +100 °C (typical) |
| Sealing Type | Static, light dynamic |
| Media Compatibility | Mineral oils, greases, petroleum derivatives |
| Compression Set | Low (depending on compound) |
| Pack Quantity | 100 units |
| Typical Use | Hydraulic, pneumatic, instrumentation, OEM |
FAQ - Common Questions from Buyers
Q1: Can this O-ring handle dynamic motion (sliding or reciprocating)?
A: Yes — it performs well in light dynamic or low-velocity reciprocating applications, provided surface finishes are high and lubrication is present. For high-speed or high-pressure dynamic use, a more robust dynamic seal may be required.
Q2: What temperature limits does NBR 70 ShA allow?
A: Typical NBR 70 O-rings operate between -30 °C and +100 °C. Under favorable conditions, short-term exposure to +120 °C may be acceptable, though long-term exposure above +100 °C accelerates aging and loss of properties.
Q3: Is this O-ring compatible with hydraulic oils and greases?
A: Yes — NBR is well-known for its excellent resistance to mineral oils, hydraulic fluids, and many petroleum-based lubricants. It is less suitable for aggressive solvents, strong acids, or high ozone/UV exposure.
Q4: Why should I choose a pack of 100 instead of singles?
A: Bulk packaging provides economies of scale, reduces unit cost, and ensures readiness for replacement and routine maintenance in industrial environments.
Q5: How precise do groove dimensions need to be for 2.3x0.8 O-ring?
A: Very precise. The groove tolerances, clearance, and finishing must align with standard metric O-ring housing design guidelines (e.g. ISO 3601). Poor groove design or excessive tolerances impair sealing, especially at micrometer scales.
For reliable, compact, and durable O-Ring 2.3x0.8 NBR 70 ShA (pack of 100) units tailored for industrial, hydraulic, pneumatic, and OEM use — order now. Stocked at our Lublin warehouse, ul. Smoluchowskiego 1, building 4, with 24h delivery available across Poland. Secure your supply of high-performance rubber sealing rings today.