For reliable, compact, and cost-effective O-Ring 24x4.5 NBR 70 ShA (pack of 100) — ideal for hydraulic, pneumatic, and industrial sealing applications — place your order now. Product is stocked in Lublin at ul. Smoluchowskiego 1, building 4, with 24h delivery across Poland. Secure your sealing solution today and avoid downtime.
This O-Ring 24x4.5 mm in NBR 70 Shore A is ideally suited for industrial sealing, hydraulic, and pneumatic systems requiring compact, robust, and cost-efficient sealing solutions. As a rubber gasket / sealing ring, its common uses include:
Static sealing in flanges, covers, housings, end caps, test ports
Light dynamic sealing where reciprocating or low-speed movement is present
OEM components, instrumentation valves, miniature pumps, hydraulic valves
Replacement and maintenance parts in fluid control systems
Integration in assembly lines, spare parts warehouses, and service kits
Engineers and procurement professionals prefer this size when space constraints demand a compact sealing cross-section, yet the sealing integrity against pressure, oil, and fluid leakage remains mandatory.
Material: Nitrile Rubber (NBR), hardness 70 Shore A — providing a balance between elasticity and mechanical strength
Precision dimensions: inner diameter 24 mm, cross-section (thickness) 4.5 mm, yielding an outer diameter of approximately 33 mm
High compatibility with oils and greases — excellent resistance in contact with mineral oils, lubricants, fuel blends, and many hydraulic fluids
Operating temperature range: typically -30 °C to +100 °C (with occasional tolerance above, depending on compound) — standard for NBR 70 seals
Low compression set and stable sealing performance — good retention of shape under pressure over repeated cycles
Cost-effective bulk packaging (100 pcs) — economical unit cost, ideal for B2B orders, maintenance operations, and stocking
Compact size and ease of integration — fits into tight grooves and compact assemblies without bulky cross-sections
| Parameter | Value |
|---|---|
| Inner Diameter (ID) | 24.00 mm |
| Cross Section (CS) | 4.50 mm |
| Outer Diameter (OD) | ~ 33.00 mm (nominal 24 + 2x4.5) |
| Material | NBR (nitrile rubber) |
| Hardness | 70 Shore A |
| Working Temperature | -30 °C to +100 °C (typical) |
| Sealing Mode | Static sealing, light dynamic use |
| Media Compatibility | Mineral oils, greases, lubricants, hydraulic fluids |
| Compression Set | Low (dependent on specific formulation) |
| Package Quantity | 100 units |
| Applications | Hydraulic, pneumatic, industrial sealing, OEM, instrumentation |
Q1: Can this O-ring be used for dynamic motion (reciprocating or rotating)?
A: Yes — but only in light-duty applications with low speed and adequate lubrication. For high-speed rotation or heavy reciprocation, specialized dynamic seals may be more suitable.
Q2: What temperatures can the NBR 70 material endure?
A: In typical use, from -30 °C up to +100 °C. Some NBR compounds may temporarily tolerate higher temperatures, but long-term exposure beyond +100 °C accelerates material aging.
Q3: Is the O-ring resistant to oils and greases?
A: Absolutely — NBR 70 is widely used for sealing in contact with mineral oils, greases, and many standard hydraulic fluids thanks to its chemical compatibility.
Q4: Why choose a pack of 100 rather than individual units?
A: Bulk packaging reduces per-unit cost, simplifies inventory management for industrial users, and reduces the frequency of reordering for maintenance or assembly operations.
Q5: What groove tolerances or design rules apply for a 24x4.5 O-ring?
A: The groove must be machined with precision to match standard metrics (e.g. ISO, DIN or manufacturer tolerances). Allowance for squeeze, cross-sectional compression, and tolerance stack-up is critical to ensure sealing without extrusion or overstress.