First-stage piston ring

Consumable component of reciprocating‑compressor piston assembly. Mounted in ring grooves of first‑stage piston. Reciprocates within first‑stage cylinder to seal clearance between piston and cylinder‑liner for first‑stage hydrogen‑compression service.

Third-stage piston ring

Consumable part of reciprocating‑compressor piston assembly. Installed in ring‑grooves of third‑stage piston, reciprocates with piston inside third‑stage cylinder to seal piston‑to‑cylinder‑liner clearance for third‑stage high‑pressure‑hydrogen compression.

First-stage gas valve gasket

The first-stage valve gasket of a hydrogen compressor is a consumable of the reciprocating compressor valve assembly. It is installed between the first-stage valve and the cylinder valve seat mating surface to seal the joint gap and is suitable for the first-stage hydrogen compression operation.

Second-stage Gas Valve Gasket

Sealing consumable for reciprocating‑compressor valve assemblies. Installed at mating interface between second‑stage compressor‑valve and cylinder valve‑seat; seals joint gaps for second‑stage hydrogen‑compression service.

Third-stage intake and exhaust valve plate

Core consumable for reciprocating‑compressor valves. Assembled in third‑stage intake‑exhaust valve assembly. Cooperates with valve‑seat and springs for unidirectional gas flow under third‑stage high‑pressure‑hydrogen compression conditions.

Valve O-ring

Static-seal wear part for gas-valve assemblies. Installed on mating faces of inlet and outlet valve bodies to provide sealing for gas-valve assemblies under high-pressure hydrogen service.

Three-stage gas valve gasket

Static-seal wear part for gas-valve assemblies. Mounted on mating faces between three-stage intake/exhaust valves and cylinder valve seats for high-pressure hydrogen operating conditions.