Material hardness influences RGD behavior. Softer compounds (70-80 Shore A) absorb gas more readily and blister easily. Harder 90-95 Shore A grades reduce gas uptake and resist cracking, but require precise groove design and anti-extrusion support. Optimal RGD-resistant seals balance modulus, elongation (>120%), and tear strength https://globalsealstech.com/product/rgd-rapid-gas-decompression-o-rings/