AR 503 O-Rings Kit 17/21/22/30/34/41/45/46/50
Spare Parts TYP 1984

AR 503 O-Rings Kit 17/21/22/30/34/41/45/46/50

O-rings kit for the AR 503 pump, listing positions 17/21/22/30/34/41/45/46/50 from the AR exploded-parts diagram. These rings seal the heads, manifolds and covers; hardened or flattened rings let air in on the suction side and cause a loss of prime. Fit the full set during a diaphragm or valve change.

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