Dixon Air King AWR4 Rubber Washer for 3/8 to 1 Inch Couplers 150 psi Black by | Jul 26, 2026This Dixon Air King AWR4 rubber washer is intended for use with sizes 3/8″ to 1″ two-lug Dixon Air King couplers and hose ends (not included) and prevents pressure leaks while the air or water line is pressurized.
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