Bring a large pot of salted water to a boil.
In a large bowl, whisk together peanut butter, soy sauce, lime juice, sesame oil, sesame seeds, Sambal Oelek, rice vinegar, ginger, garlic, and red pepper flakes until smooth.
Add ramen noodles to the boiling water and cook until al dente.
Drain, rinse under cool water, and drain again.
Toss cooled noodles with the sauce until coated.
Add cucumber, scallions, and cilantro.
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