300PCS Copper Sealing Washer Assortment Kit, Ultimate Red Copper Flat Gasket Set for Commercial Fleet, Marine Vessel & Heavy Industrial Sealing
300PCS ultimate copper sealing washer assortment kit, featuring 12 high-demand sizes for commercial truck fleet brake systems, marine vessel engine overhauls, and heavy industrial hydraulic maintenance. Made from 99.9% pure red copper, these heavy-duty gaskets deliver exceptional ductility, heat resistance, and saltwater corrosion protection, ensuring a tight, leak-proof seal even on extreme-wear surfaces. The industrial-grade, stackable storage box with color-coded compartments keeps sizes organized, making it ideal for fleet managers, marine engineers, and industrial maintenance supervisors.
Description
300PCS Copper Sealing Washer Assortment Kit, Ultimate Red Copper Flat Gasket Set for Commercial Fleet, Marine Vessel & Heavy Industrial Sealing
Auto Parts & Industrial Hardware Dual Category | 12 High-Demand Sizes for Extreme-Use Scenarios
🔍 Product Description
Our 300PCS copper sealing washer assortment kit is the ultimate solution for extreme-use sealing tasks, designed to meet the demands of commercial truck fleets, marine vessels, and heavy industrial operations. This maximum-capacity set includes 12 high-demand sizes of 99.9% pure red copper gaskets, engineered to deliver exceptional ductility, heat resistance, and saltwater corrosion protection. The heavy-duty copper material crushes evenly to fill imperfections in extreme-wear surfaces, creating a tight, leak-proof seal that resists vibration and pressure.
The kit comes in an industrial-grade, stackable storage box with color-coded compartments, ensuring quick size identification and easy organization. Whether you’re a fleet manager maintaining a commercial truck fleet, a marine engineer servicing vessel engines, or an industrial supervisor overseeing hydraulic systems, this 300PCS kit ensures you never run out of the right size washer, reducing downtime and maximizing productivity.
✨ Key Features
- 300PCS Ultimate Capacity – 12 high-demand sizes (5mm ID×9mm OD to 20mm ID×26mm OD) for extreme-use sealing tasks
- 99.9% High-Purity Red Copper – Heavy-duty material with superior ductility and corrosion resistance for extreme wear
- Marine Grade Protection – Passes 480-hour salt spray test, ideal for marine vessel engines and offshore equipment
- Heat & Pressure Resistant – Withstands temperatures up to 500°C and high pressure, perfect for industrial systems
- Industrial-Grade Stackable Storage – Color-coded compartments for quick size identification and efficient organization
- Triple Application Scope – Suitable for commercial fleet, marine vessel, and heavy industrial sealing needs
- Crush-to-Seal Design – Conforms to extreme-wear surfaces to create a tight, leak-proof seal every time
📊 What’s Included (Size & Quantity)
1. 5mm ID × 9mm OD – 35PCS
2. 6mm ID × 10mm OD – 35PCS
3. 6mm ID × 12mm OD – 25PCS
4. 8mm ID × 12mm OD – 35PCS
5. 10mm ID × 14mm OD – 30PCS
6. 8mm ID × 14mm OD – 20PCS
7. 12mm ID × 16mm OD – 25PCS
8. 14mm ID × 18mm OD – 25PCS
9. 12mm ID × 18mm OD – 20PCS
10. 16mm ID × 20mm OD – 20PCS
11. 16mm ID × 22mm OD – 15PCS
12. 20mm ID × 26mm OD – 15PCS
Total: 300PCS | Net Weight: 328g | Box Dimensions: 17.5×10×2.3cm
🔧 Key Differences from Other Kits
1. Capacity & Positioning – The 300PCS kit is the largest and most premium in the entire range, designed for extreme high-frequency maintenance in commercial fleets, marine vessels, and heavy industry.
2. Size Strategy – Focuses on 12 high-demand sizes, from precision small to heavy-duty large, covering over 95% of industrial sealing scenarios without the need for additional purchases.
3. Storage Design – Features an industrial-grade stackable box with color-coded compartments, ideal for professional team bulk management, far more efficient than standard kits.
4. Application Focus – Primarily serves commercial truck companies, shipyards, and large factories, rather than small repairs or DIY projects.
🔧 Application Scope
- Commercial Fleet: Heavy-duty truck brake overhauls, logistics vehicle hydraulic line maintenance, delivery van fuel system repairs
- Marine Vessel: Ship engine full overhauls, offshore platform machinery maintenance, saltwater environment fluid connections
- Heavy Industrial: Large-scale hydraulic compressor servicing, mining equipment repairs, factory production line maintenance
- Professional Use: Ideal for fleet managers, marine engineers, and industrial maintenance supervisors
⭐ Customer Reviews
James P. (USA, Fleet Operations Manager)
“This 300PCS copper washer kit is a game-changer for our 50-truck fleet. The 12 high-demand sizes cover every seal we need, and the heavy-duty copper holds up perfectly in our brake systems. The color-coded storage box keeps our workshop organized—no more wasting time looking for gaskets!”
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Ingrid S. (Norway, Marine Engineer)
“We use these copper gaskets for ship engine overhauls, and this 300PCS kit has been a lifesaver. The marine-grade corrosion resistance holds up perfectly in saltwater, and the 12 sizes cover all our engine fitting needs. The industrial-grade box is tough enough for our shipyard environment!”
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Order Your 300PCS Copper Sealing Washer Kit Today!
Bulk orders for commercial fleets/industrial maintenance enjoy exclusive discounts!
