O-ring 28x4 mm NBR

O-ring 28x4 mm NBR 70 ShA - Nitrile Rubber Seal (Pack of 100)

The O‑ring 28x4 mm NBR 70 ShA - Nitrile Rubber Seal (Pack of 100) is a premium sealing solution designed for both industrial and automotive applications. Crafted from high-quality nitrile rubber (NBR) with a hardness of 70 Shore A, these O‑rings deliver excellent resistance to oils, fuels, hydraulic fluids, and general aging.

Technical Specifications:

• Material: Nitrile Rubber (NBR), 70 Shore A (70 ShA)

• Dimensions: Inner diameter 28 mm, cross-section (thickness) 4 mm

• Packaging: Convenient pack of 100 — ideal for service kits, maintenance, and bulk procurement

• Properties: Balanced hardness for flexibility and strength; resistant to oils, greases, and fuels — widely used in sealing applications globally

Key Benefits:

• High chemical resistance — NBR 70 ShA performs exceptionally well against oils, lubricants, fuels, and many industrial fluids

• Durable and flexible — maintains seal integrity across temperature fluctuations

• Bulk pack convenience — 100 pieces ready for rapid service use, reducing procurement cycle time

• Global ready sizing — 28x4 mm is a common size in metric O‑ring standards, ensuring interchangeability

Typical Applications:
Used in hydraulic assemblies, automotive fuel or oil systems, pumps, valves, compressed air tools, industrial machinery — anywhere a reliable nitrile O‑ring is needed.

Avoiding cannibalization on simmering.pl:
This listing uniquely targets users searching for pack quantities of NBR 70 ShA O‑rings, with precise 28 x4 mm metric sizing, differentiating it from single-unit listings or other packaging options.

FAQ (Search-Driven)

Q1. What does “70 ShA” mean?
It refers to the hardness of the nitrile rubber on the Shore A scale—70 ShA offers a prime blend of flexibility and mechanical strength.

Q2. Are these O-rings resistant to oils and fuels?
Yes. NBR 70 ShA offers excellent resistance to mineral oils, grease, fuels, and hydraulic fluids.

Q3. Why order a pack of 100?
It’s cost-effective, ideal for routine maintenance, repair shops, or industrial service operations — minimizes downtime.

Q4. What are the temperature limits of NBR?
Typically withstands from approximately -30 °C to +100 °C (depending on the specific compound). Ideal for general industrial environments.

Q5. Is 28 x4 mm a standard size?
Yes — commonly referenced in metric O-ring catalogs and widely used in machinery and equipment.

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