Chemical resistance requirements for HPHT seals include compatibility with crude oil, natural gas, drilling mud, completion fluids, and production chemicals. Sour gas environments containing hydrogen sulfide demand materials resistant to sulfide attack. Acidic well conditions require acid resistance. Hydrocarbon swelling must remain within acceptable limits. Comprehensive chemical com... https://globalsealstech.com/product/rgd-rapid-gas-decompression-o-rings/