Precision-Engineered Aluminium Sealing Washers for Leak-Proof Connections
Conex’s Aluminium Sealing Washers are designed for effective sealing, corrosion resistance, and enhanced durability, ensuring leak-proof connections in industrial systems.
Reliable and durable Aluminium Sealing Washers by Conex, offering leak-proof performance and corrosion resistance for demanding applications.
At Conex Aluminium Components, we manufacture **Aluminium Sealing Washers** that deliver superior sealing capabilities and resistance to extreme conditions. These washers are ideal for preventing fluid and gas leakage in piping systems, automotive applications, and industrial equipment. Made from high-quality aluminium, they are lightweight, corrosion-resistant, and durable, ensuring reliable performance even in harsh environments. Available in various sizes and customizable to your specific needs, Conex’s sealing washers are designed to enhance the efficiency and safety of your operations. Experience leak-proof confidence with our precision-engineered washers.
Aluminium sealing washers (crush washers) are soft, flat rings that deform slightly under bolt or plug clamping force, filling surface irregularities to create a leak-tight seal on threaded joints.
They are used on oil drain plugs, banjo bolts, hydraulic and fuel fittings, brake lines, gearboxes, compressors and pumps, particularly on aluminium housings.
Sealing washers are made from soft, annealed 1050 or 1100 aluminium (O temper) so they conform readily to sealing faces.
Aluminium sealing washers are commonly made to DIN 7603 Form A dimensions; other sizes can be produced to drawing.
Standard sizes range from M5 to M48, with inch equivalents and special sizes for OEM drain plugs and fittings.
They should be replaced whenever the joint is opened because they deform permanently during tightening and may not reseal reliably.
They perform well in oil, fuel and hydraulic systems up to about 200 °C, depending on pressure and joint design.
Yes. Aluminium is compatible with engine oils, fuels, hydraulic fluids and most refrigerants.
Aluminium washers are softer, lighter and galvanically compatible with aluminium housings. Copper washers withstand higher temperatures and pressures, so they are chosen for exhaust and high-pressure applications.
Clean both sealing faces, fit a new washer and tighten to the specified torque so the washer compresses evenly without being extruded.
Yes. Bonded seals combining a metal ring with a rubber lip are available for applications needing higher sealing reliability.
Inside diameter, outside diameter, thickness, flatness and hardness are checked to ensure correct sealing behaviour.
Yes. Custom sizes and thicknesses are produced to drawing.
Samples are typically available within 2–3 weeks and production within 3–5 weeks.
Please provide inside and outside diameter, thickness, temper and quantity.
Need Aluminium Sealing Washers? Get a Fast, Detailed Quotation
Send your drawing (STEP, IGES, DWG, DXF or PDF) with material grade, finish and quantity. Our engineers reply with a DFM review, price and lead time. MOQ 10 pcs • ISO 9001:2015 • Exports to USA, UK, Europe, Canada & Australia.
