FKM O-Ring Seal Assortment Kit – 6 Sizes Fluorine Rubber

FKM Fluorine Rubber O-Ring Seal Assortment Kit

Keep your projects leak-free and running smoothly with this comprehensive FKM (Fluorine Rubber) O-Ring Seal Assortment Kit. Featuring six cross-section thicknesses — 1.5 mm, 1.8 mm, 1.9 mm, 2.4 mm, 2.65 mm, and 3.1 mm — this kit gives you the right size seal for a wide range of mechanical, hydraulic, and plumbing applications. All rings are conveniently organized in a neat box for quick selection on the job.

Why Choose FKM O-Rings?

FKM (Viton®-type) fluoroelastomer is a premium sealing material engineered to outperform standard rubber in demanding environments. Its tightly cross-linked polymer structure delivers:

• Excellent Oil & Fuel Resistance – Maintains a reliable seal against petroleum-based oils, hydraulic fluids, and fuels without swelling or degrading.
• Outstanding Wear Resistance – Withstands repeated compression cycles, keeping seals tight over long service life.
• Superior Temperature Resistance – Performs reliably across a broad temperature range, from cold-start conditions to high-heat engine bays and industrial equipment.
• Dependable Waterproofing – Creates a robust, moisture-blocking seal in hydraulic cylinders, fittings, pumps, and valves.
• Chemical Resistance – Stands up to aggressive solvents, acids, and industrial chemicals better than standard nitrile or silicone O-rings.

Kit Specifications

Ideal Applications

• Automotive engine and transmission sealing
• Hydraulic and pneumatic systems
• Industrial pumps, valves, and fittings
• Plumbing connections and pipe fittings
• Fuel systems and carburetors
• General mechanical maintenance and repair

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Frequently Asked Questions

Q: What does FKM mean, and why is it better than standard rubber O-rings?

A: FKM stands for Fluoroelastomer (commonly known by the trade name Viton®). Compared to standard nitrile (NBR) or silicone O-rings, FKM fluorine rubber offers significantly better resistance to oils, fuels, high temperatures, and aggressive chemicals, making it the preferred choice for automotive, hydraulic, and industrial sealing applications.

Q: What sizes are included in this FKM O-ring assortment kit?

A: This kit includes O-rings in six cross-section (cord/thickness) sizes: 1.5 mm, 1.8 mm, 1.9 mm, 2.4 mm, 2.65 mm, and 3.1 mm, covering a wide range of standard sealing applications across multiple inside diameters.

Q: Are these FKM O-rings suitable for use with petroleum-based oils and hydraulic fluids?

A: Yes. FKM fluorine rubber is specifically engineered for excellent compatibility with petroleum-based oils, hydraulic fluids, and fuels. It resists swelling and degradation in these media, ensuring a long-lasting, reliable seal.

Q: How should I store unused FKM O-rings to maintain their quality?

A: Store unused O-rings in the included assortment box, away from direct sunlight, extreme heat, and ozone sources (such as electric motors). Kept in cool, dry conditions, FKM O-rings maintain their elasticity and sealing properties for an extended period.

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.