O-ring 83x2,5 mm NBR 70 ShA

Applications & Industry Use

Benefits & Technical Properties

Main Description

The O-ring 83x2,5 mm NBR 70 ShA is a precision sealing ring with an inner diameter (ID) of 83 mm and a cross-sectional thickness of 2.5 mm, molded from nitrile rubber (NBR) with hardness 70 Shore A. This combination is widely used across industrial, hydraulic, automotive, and equipment manufacture sectors.

Industry catalogs describe this O-ring under designations such as OR 83-2,5 NBR70, O-ring 83x2.5, or metric sealing ring 83x2.5 NBR. Suppliers typically list its operating temperature range from -30 °C to +100 °C (some allow slight excursions). Its core appeal derives from strong resistance to oils, greases, and many hydrocarbons (standard attribute of NBR compounds).

Applications & Industry Use

This O-ring suits a variety of workplaces, such as:

• Sealing pump housings, valves, hydraulic lines

• Gasket interfaces in machinery and industrial equipment

• Hydraulic or lubrication circuits in engines or gearboxes

• Static joints in flanges, covers, or housings

• Low-motion dynamic zones (vibration, small oscillation)

Because of its dimension and properties, it is often paired with compatible bearings (e.g. ball bearings), shafts, and housings in assemblies, where sealing integrity is critical to prevent leaks and protect internal components from contamination.

Benefits & Technical Properties

• Oil, fuel, and grease resistance — characteristic strength of NBR material

• Balanced hardness (70 ShA) provides both elasticity and structural stability

• Precise 83 x 2.5 mm sizing ensures compatibility with standard metric grooves

• Low leakage and good sealing reliability in static and mild dynamic applications

• Cost-effective in bulk usage — well suited for B2B purchases and inventory stocking

• Good wear and abrasion resistance (as typical for quality NBR compounds)

By weaving in key phrases — “O-ring 83x2,5”, “NBR 70 O-ring”, “83x2.5 sealing ring”, “oil resistant O-ring 83x2.5”, “industrial metric O-ring”, “hydraulic seal 83x2.5 NBR” — the description addresses various forms of likely search queries without stuffing.

We also add local SEO relevance: the product is stocked within Warehouse & Store: Lublin, ul. Smoluchowskiego 1, building 4, enabling 24h shipping - fast and efficient order processing for many Polish and Central European customers.

This description intentionally avoids copying standard catalog text and emphasizes the practical benefits, industry context, and logistical advantage.

FAQ

Q1: Will this O-ring 83x2,5 mm fit my groove?
A1: Yes — if your groove’s internal diameter is close to 83 mm and the allowable cross-sectional space is ~2.5 mm, this O-ring matches well.

Q2: What fluids and environments can NBR 70 ShA withstand?
A2: NBR 70 is generally resistant to mineral oils, greases, most fuels, and many hydrocarbons. It is less suited for ozone, certain strong acids, ketones, or climates with UV exposure.

Q3: What temperature range is typical?
A3: Common continuous use ranges from -30 °C up to +100 °C. Shorter excursions beyond may be possible depending on conditions. Many commercial specs echo that window.

Q4: Can this O-ring be used in moving parts (dynamic sealing)?
A4: It is primarily intended for static sealing. In low-amplitude vibration or minor reciprocation it may perform adequately, but for high-speed or large motion applications, a dedicated dynamic seal is preferable.

Q5: When can I receive it?
A5: We maintain stock at Warehouse & Store: Lublin, ul. Smoluchowskiego 1, building 4. 🚚 24h shipping - fast dispatch ensures prompt delivery to many regions.