Back-up Washers

Monarch-McLaren offers the finest in leather back-up washers. These washers are engineered to meet military specifications MIL-W-5521 or KK-L-164 A, plus other applications. Custom manufactured sizes are available to meet your specifications, from 1/32" to 20" (standard) or larger.

Natural leather back-up washers can be impregnated in a variety of ways, including Thiokol, oil, wax and more. In fact, Monarch-McLaren is regarded as the worldwide leader in Thiokol Impregnation – a process that will increase the leather's resistance to abrasion, temperature, and chemicals. You can rest assured that your specific quality control requirements will be met.