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The PARKER PT-00300 is a steel flared tube cap designed to seal and terminate flared tubing connections with a 1/4-19 BSPP thread. It provides a secure, leak-resistant closure on hydraulic and fluid system lines where a port or tube end must be capped off during service, maintenance, or system reconfiguration. Rated to 5000 psi maximum working pressure and 500 degrees F maximum working temperature, this cap is built for demanding industrial and fluid power applications. It is typically installed by hydraulic technicians, millwrights, and fluid system specialists working on high-pressure tube assemblies.
This cap is suited for use in hydraulic circuits, pneumatic systems, and high-pressure fluid lines that use flared tube fittings with BSPP thread connections. It is commonly used to block off open ports or tube ends during system modifications, pressure testing, or component replacement. The BSPP (British Standard Parallel Pipe) thread standard makes this fitting appropriate for equipment built to JIS or international specifications in addition to applications meeting B8363 requirements.
Designed for use with flared tube connections using 1/4-19 BSPP thread, conforming to B8363 and JIS B2351 standards. Suitable for hydraulic and fluid power systems requiring BSPP-threaded cap fittings.
Installation should be performed by a qualified hydraulic or fluid system technician. Depressurize and isolate the system completely before removing or installing any fittings. Use appropriate tooling for the fitting size and ensure threads are clean and free of damage before installation. Verify thread standard compatibility before installing BSPP fittings on any system to avoid cross-threading with NPT or other thread forms.
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