5-Pack NBR Rubber O-Rings CS 3.55mm Industrial Seal Gaskets
5-Pack NBR Rubber O-Rings CS 3.55mm Industrial Seal Gaskets
Details
5-Pack NBR Rubber O-Ring Seal Gaskets – CS 3.55mm
Keep your machinery, plumbing, and industrial assemblies leak-free with these heavy-duty NBR (Nitrile Butadiene Rubber) O-Rings. Sold in a convenient 5-piece lot, these standard ring gaskets feature a cross-section of 3.55mm and are available in a wide range of inner diameters — from 90mm up to 155mm — making them a versatile solution for a broad spectrum of industrial, mechanical, and hydraulic sealing applications.
Key Features
- Material: Premium NBR (Nitrile Butadiene Rubber) — excellent resistance to oils, fuels, and hydraulic fluids
- Cross-Section (CS): 3.55mm for a consistent, reliable seal
- Available Inner Diameters (ID): 90 / 92.5 / 95 / 97.5 / 100 / 125 / 132 / 155mm
- Quantity: 5 pieces per lot
- Shape: Standard ring gasket / toroidal profile
- Standard: Manufactured to industry-standard dimensions for easy cross-referencing and replacement
- Application: Ideal for pumps, valves, hydraulic cylinders, pipework fittings, compressors, and general industrial machinery
- Temperature Range: Suitable for a wide operating temperature range typical of NBR compounds
Why Choose NBR O-Rings?
NBR rubber is one of the most widely used elastomers in sealing technology. Its strong resistance to petroleum-based oils, greases, and hydraulic fluids makes it the go-to choice for automotive, manufacturing, and industrial sealing tasks. These O-rings form a tight, durable seal that helps prevent fluid and gas leakage in both static and dynamic applications.
Specifications
| Brand | Ouling |
| Material | NBR Rubber |
| Cross-Section (CS) | 3.55mm |
| Inner Diameter Options | 90, 92.5, 95, 97.5, 100, 125, 132, 155mm |
| Quantity per Pack | 5 pieces |
| Shape | Ring Gasket |
| Standard | Standard |
| Country of Origin | Made in Mainland China |
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Frequently Asked Questions
Q: What sizes of inner diameters are available for these NBR O-rings?
A: These NBR rubber O-rings are available in the following inner diameter sizes: 90mm, 92.5mm, 95mm, 97.5mm, 100mm, 125mm, 132mm, and 155mm — all with a cross-section of 3.55mm. Select your required ID when ordering.
Q: What are NBR O-rings best used for?
A: NBR (Nitrile Butadiene Rubber) O-rings are ideal for sealing applications involving petroleum-based oils, hydraulic fluids, fuels, and greases. They are commonly used in pumps, valves, compressors, automotive systems, and general industrial machinery where a reliable, leak-proof seal is required.
Q: How many O-rings come in one order?
A: Each order includes 5 pieces (5PC/lot) of the selected inner diameter size, giving you convenient spares for maintenance and replacements.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.
Materials + Care
We prioritize quality in selecting the materials for our items, choosing premium fabrics and finishings that ensure durability, comfort, and timeless appeal.
Shipping + Returns
We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible.