0-1000 PSI 2.5" Dry Pressure Gauge - 1/4" MNPT Bottom Mount - J7K Port Retainer The plug also protects threads

The plug also protects threads of 200 and 300 bar DIN threads

The KM 37 helmet is CE Approved

310-003 O-ring 1 510-008 O-ring 2 510-010 O-ring 2 510-011 O-ring 1 510-012 O-ring 1 510-014 O-ring 1 510-015 O-ring 1 510-211 O-ring 1 510-260 O-ring 1 510-401 Gasket 1 510-481 O-ring 1 510-483 O-ring 1 510-490 O-ring 1 510-550 Valve

Dow 111 can be used to lubricate o-rings and prevent them from dry rotting and splitting

Recommended Lubricants:

0-1000 PSI 2.5" Dry Pressure Gauge - 1/4" MNPT Bottom Mount - J7K Port Retainer The plug also protects threads0 1000 PSI 2. 5" Dry Pressure Gauge 1 4" MNPT Bottom Mount J7K **Note: This gauge is NOT oxygen compatible**