J&M Products Copper Crush Washers - 10mm / 3/8" - 10-Pack (Part #22900)

10-Pack | Part # 22900

Ensure a perfect, leak-free seal for your hydraulic fittings with this 10-pack of J&M Products 10mm / 3/8" copper crush washers, made to J&M specifications as an exact fit for our stainless steel brake hose kits.

Why Copper Crush Washers

Crush washers deform under pressure to create a tight seal between a banjo bolt and mating surface — a more uniform seal than standard washers, critical for high-pressure brake systems. Copper is ideal because it is:

• Malleable — deforms easily to fill micro-gaps for a secure, leak-free connection.
• Corrosion-resistant — withstands brake fluid and other fluids without degrading.
• Heat-resistant — holds up under the high temperatures generated by brake systems.

Product Specifications

• Quantity: 10 washers per pack
• Material: High-quality copper
• Inner diameter (ID): 10mm / 3/8"
• Outer diameter (OD): 15.75mm
• Thickness: 2mm
• Compatibility: Universal fitment possible — confirm dimensions match your application; exact fit for J&M Products stainless steel brake hose kits.
• Made in the USA.