Quite the old living-clothes sequence by RubberMatt.

Metal Suit by RubberMatt

Discovery

“Control I’ve reached the upper level of the derelicts bridge, there’s another one of those crates here but this one is open, I’m taking a look inside.”

“Proceed with caution ensign.”

Mistake

“The mask is in two pieces hinged along one side, it’s lined with some kind of thick spongy material with a large protusion projecting inward from the front half roughly where the mouth would be. I’m just holding up it to my head for a size comparsion … snap click "

“Ensign Bales?”

“mmmmmmpppppphhhhhh”

“Ensign?”

“Ensign?”

Subsumed

Ensign Jessica Bales was utterly helpless as the material lining the mask oozed over her head, conforming tightly to every feature and penetrating ever orifice.
In stunned horror she could feel something cold flowing down over her body melting away her protective suit and gripping to her naked skin. The mass that had forced it’s way into her mouth expanded and extended, forcing it’s way down her throat, silencing her muffled screams, at the same time the stuff that had completely coated her body entered her through all three orifices between her legs …..

Transformed

Jessica was dimly aware she was moving but that she was not doing so of her own volition.
Unable to see, speak or hear she was completely isolated from the outside world, all she could feel was the cool slick sheath tightly encasing every inch of her body and filling her most intimate places, it’s internal surface undulating, stimulating every erogenous zone simutaneously, the huge rock hard intruders twisting and thrusting inside her. Through a fog of lust and need she was barely aware that the mask had taken complete control of her, that she was now a prisoner in her own body, but as her orgasm built she distractedly found that she didn’t really care right now.

Subdued

Completely abandoning her self to pleasure, Jessica was utterly oblivious as the metallic suit that was wearing her obtained another member of the exploration team for transformation.