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Metric Copper Sealing Washers

Description & Features

Adaptall America presents expertly crafted copper washers designed for precision sealing tasks across various industrial sectors. These Metric Copper Sealing Washers ensure top-tier corrosion resistance and durability due to their high-quality copper composition.

With a diameter of 12mm and a thickness of 1.4mm these washers are tailored for critical applications demanding reliable performance. The M8 x 1.0 sizing adheres to metric standards ensuring broad compatibility with numerous systems and components requiring metric specifications.

These washers are engineered to provide a robust and leak-proof seal integral for maintaining complex systems. The design excludes the need for additional components like thread sealants thus simplifying installation and maintenance procedures.

MPN: 3500-08MM

Supplier Part Number: 3500-08MM

Specifications

d Diameter 12mm	Adaptall Material Steel	S Misc 1.4mm	Adaptall Shape Component	Side 1 Callout M8 X 1.0	Side 1 Gender -	Side 1 Size 8mm	Side 1 Type Metric	Brand Adaptall America	Brand Adaptall	Pack Size 1.00	UOM EA	Supplier Part Number 3500-08MM	Product Weight 0.01 lbs

Product Questions & Answers (2)

Question by: Jimmy M on Aug 5, 2025, 9:03 AM

These are listed as copper washers but the attributes say steel, which one is it actually?

Answer by: Customer Support on Aug 7, 2025, 7:52 AM

Copper is the correct material here. The product name, description, and intended use all point to copper construction. The steel notation in the attributes appears to be a data entry error on the spec side. Copper is what you're getting, and it's what makes these work well for sealing applications where corrosion resistance matters.

Question by: Stan B on Apr 21, 2025, 5:22 PM

got an M8 x 1.0 bolt, are these the right sealing washers for it?

Answer by: Customer Support on Apr 23, 2025, 9:35 AM

Match the callout on the washer to your fastener. These are sized M8 x 1.0, with an 8mm side 1 size, so they line up with M8 x 1.0 metric hardware.