The term "stasis" refers to Cybertronians putting themselves in sleep mode. When a male or female Cybertronian is in stasis, they can not hear or see what's going on outside of their bodies. They must be awaken by their fellow beings or they might stay this way until someone finds their bodies. As long as medic, scientist and medical assistant are there, then nothing would go wrong.
Stasis doesn't hurt Cybertronians. It's like how humans sleep at night and wake up in the morning, except when Cybertronians are in stasis they must be awaken by something or someone. It also helps Cybertonians, whether they are tired or hurt really badly.
Skyquake was in stasis until Starscream and Soundwave awakened him by placing an energon cube inside his stasis chamber. When Starscream found Megatron floating in space, he had no choice but to bring his master to the warship where they immediately put his body into stasis.
Scraplets were in stasis until they were brought into the Autobot base. They eventually broke out of their pod and would of nearly destroyed the base if if wasn't for the humans saving their robot friends.
Bulkhead was put in stasis by Ratchet to examine the data that was stored into his head. Ratchet examined Bulkhead again after the data was gone from his mind. Bulkhead woke up from stasis when Miko played their favorite song on her guitar.
The possessed Nemesis uses its stasis beam to put Bumblebee, Arcee, Bulkhead, Optimus Prime, Megatron, Dreadwing, Soundwave, Knock Out and the Vehicons in stasis. They were out of it when the Humans stopped the possessed Warship.
Smokescreen explained to Optimus Prime, Ratchet, Arcee and Bumblebee that he arrived on Earth in a Decepticon escape pod because he was captured aboard and went into stasis. He woke up from stasis when they found him.
Optimus went into deep stasis and saw Alpha Trion's spirit in the AllSpark. Alpha Trion tried to convince Optimus to join the AllSpark, but Smokescreen was able to use the Forge of Solus Prime to revive Optimus in a new body.
The Predacon clones in Shockwave's lab on Earth were in their stasis pods in their C.N.A until Wheeljack used one of his bombs to destroy them with Ultra Magnus's approval. Predaking was very mad about this and attacked them. Luckily Optimus Prime saved them from Predaking's wrath.
Unicron woke up from stasis and used Megatron's body as his vessel to destroy Cybertron. His plans were foiled as the alliance of Autobots, Predacons and Knock Out stopped him with Optimus Prime trapping Unicron inside the AllSpark's container.