Sour-service compliant API 6A gate valve seals Singapore meet NACE MR0175/ISO 15156 hardness and environmental resistance requirements for H2S-rich reservoirs. HNBR and specialized FKM grades prevent sulfide stress cracking and blistering. Singapore procurement teams rely on fully documented, high-hardness compounds from trusted suppliers to ensure safety and reliability in aggressive... https://globalsealstech.com/product-category/oil-gas-seals/api-6a-gate-valve-seals/