Low-emission certified packing for LNG ball valves achieves Shell TAT 77/312 Class A with less than 50 ppm leakage. Only specifically qualified combinations of spring-energized PTFE and graphite rings are approved for newbuild LNG carriers and floating storage regasification units under strict environmental rules. https://globalsealstech.com/product-category/oil-gas-seals/api-6d-ball-valve-and-lng-seals/