O-Ring 170x2 mm NBR

Applications

The **O‑Ring 170x2 mm NBR 70 Shore is engineered for industrial sealing tasks where large-diameter rubber gaskets are required. With an inner diameter (ID) of 170 mm and cross-section (CS) thickness of 2 mm, this large-format O-ring is ideal for use in hydraulic cylinders, pump housings, large rotary equipment and static seal joints in heavy-duty machinery. The nitrile-butadiene rubber (NBR) compound with 70 Shore A hardness ensures reliable performance under demanding conditions.

Advantages

• Large ID specification - The 170 mm inner diameter allows a single ring to cover large bore components, reducing parts count and simplifying design.

• Robust material performance - Made from NBR with hardness 70 Shore A, this O-ring offers strong resistance to mineral oils, greases, hydraulic fluids and animal/vegetable oils.

• Stock-friendly format for B2B - Standardised large-ID specification supports inventory consolidation, bulk purchasing and reduced downtime.

• Temperature & media suitability - Typical operating range from approx. -30 °C to +100 °C (short-term up to +120 °C) and high compatibility with oil-based fluids.

Technical Data & Specification Summary

• Material: Nitrile Rubber (NBR)

• Hardness: 70 Shore A

• Inner Diameter (ID): 170 mm

• Cross-Section (CS): 2 mm

• Ideal for static seals, hydraulic/pneumatic systems, large bore assemblies

• Media compatibility: Mineral oil-based oils and greases, aliphatic hydrocarbons, certain hydraulic fluids

• Not recommended for: Aromatic fuels, glycol-based brake fluids, prolonged ozone/UV exposure

• Keywords naturally integrated: “O-Ring 170x2”, “rubber seal NBR 70 Shore”, “industrial sealing ring large ID”, “170 mm inner diameter O-Ring”, “technical sealing component NBR”

FAQ

Q1: What do the dimensions “170x2 mm” refer to?
A1: They indicate the O-Ring has an inner diameter of 170 mm and a cross-section thickness of 2 mm — ideal for sealing larger diameter housings or bores.
Q2: Why choose NBR material with 70 Shore hardness?
A2: NBR (nitrile-butadiene rubber) with 70 Shore A hardness offers excellent resistance to oils and greases, good mechanical durability and cost-effective performance in industrial sealing.
Q3: Can this O-Ring be used in hydraulic or pneumatic systems?
A3: Yes — the size and material are suitable for hydraulic cylinders, pump housings, large pneumatic components and other industrial assemblies requiring robust rubber gasket sealing.
Q4: What are the procurement benefits of this large-ID format?
A4: A single large-ID O-Ring covers a wider bore, reducing the number of smaller individual seals, simplifying part inventory and accelerating maintenance.
Q5: Are there limitations on temperature or media compatibility?
A5: While this O-Ring performs well from around -30 °C to +100 °C (short-term up to +120 °C) and in many oil-based media, it's less suitable for exposure to ozone, UV, aromatic fuels or aggressive solvents.