S-97725A115 8.2 mm ID x 13.9 mm OD DIN 7603 Metal Sealing Washers

Key Features & Benefits at a Glance

• Superior electrical conductivity ensures reliable current flow in electrical assemblies, reducing resistance and heat buildup.
• Excellent corrosion resistance from pure copper material provides long-lasting performance in humid or chemically aggressive environments.
• Non-magnetic properties make these washers ideal for sensitive electronic and instrumentation applications where magnetic interference must be avoided.
• Precise dimensional accuracy with 8.2mm ID and 13.9mm OD ensures perfect fit with M8 fasteners, preventing loosening and maintaining secure connections.
• DIN 7603 compliance guarantees consistent quality and interchangeability with other metric components in European machinery and equipment.
• Effective sealing capability creates reliable seals in plumbing and automotive systems, preventing fluid leaks under compression.
• Durable copper construction maintains integrity through repeated thermal cycles and mechanical stress without cracking or deforming.

Professional Applications & Engineering Value

These M8 metric copper flat washers deliver critical engineering solutions where standard steel washers fail. The copper material provides inherent corrosion resistance that prevents galvanic corrosion when used with dissimilar metals, extending service life in marine, chemical processing, and outdoor applications. In electrical applications, the superior conductivity maintains ground integrity and prevents hot spots in power distribution systems. The non-magnetic characteristic makes them essential for MRI equipment, laboratory instruments, and aerospace systems where magnetic interference would compromise performance. The precise DIN 7603 specifications ensure these flat washers provide consistent load distribution and sealing pressure in automotive engines, hydraulic systems, and industrial machinery, solving common challenges of vibration loosening and fluid leakage.

Specification Summary & Compliance

Manufactured to DIN 7603 standards with precise dimensional tolerances, featuring 8.2mm inner diameter, 13.9mm outer diameter, and 0.8-1.2mm thickness range. These metric washers are engineered for M8 screw size applications and comply with European mechanical standards for interchangeability and quality assurance. The copper construction meets industry requirements for electrical and thermal applications while providing natural corrosion resistance without additional coatings.