Description
Product Overview
HNYYZL’s M12 copper oil drain plug crush washers are precision-engineered for reliable sealing in engine oil pans. Made from 99.7% pure red copper, these washers offer superior ductility and softness to ensure a tight, leak-free seal between flanges and oil pans. Each washer measures 12mm inner diameter, 22mm outer diameter, and 1.5mm thickness, designed to fit M12x1.25 bolts. The annealing process enhances flexibility, while pickling and chromating create a protective layer that boosts corrosion resistance by 10x. Ideal for automotive repair, DIY projects, and professional mechanics seeking durable, cost-effective sealing solutions.
Usage
These copper washers are used during engine maintenance to replace worn or damaged drain plug washers, preventing oil leaks that can cause engine damage. They are suitable for both professional mechanics and DIY enthusiasts working on cars, trucks, and heavy machinery. Installation is simple: place the washer under the drain plug before tightening. The washers are compatible with most standard M12x1.25 bolts and are especially useful in high-temperature, high-pressure environments where plastic or rubber washers may degrade. Always verify compatibility before use to ensure optimal performance.
Why Choose Us
HNYYZL’s copper washers are crafted for long-term reliability and superior performance. Unlike plastic or rubber alternatives, copper offers unmatched durability and resistance to corrosion, ensuring a tight seal even under extreme conditions. The protective chromating layer extends the washer’s lifespan and prevents rust buildup. Each set includes 20 washers, offering excellent value for money and reducing the need for frequent replacements. Our washers are manufactured to precise tolerances for consistent fit and function. We stand behind our products with responsive customer support and a commitment to quality.
Key Features
- Superior corrosion resistance: Chromated copper coating protects against rust and environmental damage.
- High ductility and softness: Red copper material conforms to surfaces for a tight, leak-free seal.
- Long-lasting performance: Annealing process enhances flexibility and durability for repeated use.
- Cost-effective solution: 20-piece set outperforms plastic/rubber washers at a fraction of the cost.
- Reliable customer support: We provide clear instructions and responsive assistance for any questions or concerns.
FAQ
What material are these washers made of?
These washers are made from 99.7% pure red copper, which offers superior ductility and softness for effective sealing. The material is annealed for flexibility and treated with pickling and chromating to enhance corrosion resistance.
What size do these washers fit?
Each washer is 12mm inner diameter, 22mm outer diameter, and 1.5mm thick, designed to fit M12x1.25 bolts. Always verify compatibility before use.
How do I install these washers?
Place one washer under the drain plug before tightening. Ensure the washer is seated properly to avoid leaks. No special tools are required for installation.
Are these washers suitable for high-temperature environments?
Yes, copper washers are ideal for high-temperature applications. Unlike plastic or rubber, copper maintains its integrity and sealing ability even under extreme heat and pressure.
How many washers are included in the set?
The set includes 20 copper crush washers, providing ample quantity for multiple applications or replacements. This makes it a cost-effective solution for mechanics and DIYers.








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