【Part Number and Use】19037 O-ring seals designed for HVAC refrigeration quick coupler maintenance. Used in service hose fittings, low loss fittings, SealRight quick couplers, and Schrader port connection points during AC charging, refrigerant recovery, evacuation, and refrigeration diagnostic service.
【Quick Coupler Fit】Compatible with Yellow Jacket 19109 and 19209 SealRight 1/4 in quick couplers, and also compatible with Yellow Jacket 19100 SealRight coupler set using 19037 O-rings. Also suitable for HVAC core removal tools and core depressor tools using the same Schrader-port O-ring size and sealing groove; compare the old O-ring and groove before ordering.
【Upgraded Fluororubber】Made from upgraded black and brown premium fluororubber for demanding HVAC field service. The material helps resist refrigerant exposure, oil contact, high and low temperature changes, and repeated compression from frequent connecting and disconnecting, helping maintain flexible sealing contact during daily repair work.
【Sealing Function】Installs inside the quick coupler or service fitting sealing area to help seal around Schrader valve connections. Replacing a worn 19037 O-ring helps reduce refrigerant seepage, air leakage, unstable fitting seals, and minor service loss during charging, recovery, vacuum work, leak checking, or system diagnostics.
【HVAC Repair Use】Suitable for AC service trucks, refrigeration maintenance, field technicians, low loss fitting rebuilds, hose fitting repair, and cooling-season service calls. Keeping 19037 O-rings available helps prevent job delays caused by hardened, flattened, cracked, or missing coupler seals.
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