The Hobart OR-001-21 O-Ring forms a tight seal around the air trap in a dishwasher. By keeping air out of the water system, the seal prevents leaks and stabilizes pressure so that the unit can drain properly and clean effectively.
The Hobart OR-001-21 O-Ring seals an opening or joint in the air trap assembly to prevent leaks, air infiltration and pressure loss during dishwasher or glass washer operation. Its sealing design matters because a properly fitted elastomer barrier maintains the controlled internal conditions that this seal category is intended to protect.
The Hobart OR-001-21 O-Ring might be wearing out if the unit is leaking, the air trap is leaking, the dishwasher is leaking or the booster tank is leaking. Users may observe pressure switch leakage on the booster tank, dribbling from the air gap box while filling the wash tank, a cracked and leaking air trap, booster level sensor errors or scale-filled booster tank conditions, which might be remedied by installing a real OEM replacement to support reliable operation.
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Parts Town lets you return most new, unopened real OEM parts within 90 days of delivery, so visit our Returns page for more details. For orders that came from a third-party seller, their policy applies.