# Protostar owners - Silicone?

**URL:** <https://forums.yoyoexpert.com/t/protostar-owners-silicone/65965>\
**Category:** Yo-Yo Mods and Maintenance\
**Created:** [May 5, 2014, 9:05pm UTC](https://forums.yoyoexpert.com/t/protostar-owners-silicone/65965 "2014-05-05T21:05:14Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![CaoJAsian](https://avatars.discourse-cdn.com/v4/letter/c/e19b73/32.png) [@CaoJAsian](https://forums.yoyoexpert.com/u/CaoJAsian)\
**Post date:** [May 5, 2014, 9:05pm UTC](https://forums.yoyoexpert.com/t/protostar-owners-silicone/65965/1 "2014-05-05T21:05:14Z")

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So I was replacing the pads in my protostar when I thought about putting silicone in there instead. Looking at recess, there’s a few air bubbles, including one that breaks the surface, creating a hole. I’m wondering if silicone is a good idea now because i’m not sure of the hole is big enough for silicone to flow down and leak into the hollow middle area where the logo is. There a holes on both halves.

Any other protostar owners ever notice this?

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**Author:** ![Dragonegs](https://avatars.discourse-cdn.com/v4/letter/d/9fc348/32.png) [@Dragonegs](https://forums.yoyoexpert.com/u/Dragonegs)\
**Post date:** [May 5, 2014, 9:15pm UTC](https://forums.yoyoexpert.com/t/protostar-owners-silicone/65965/2 "2014-05-05T21:15:19Z")

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This is just the way protostars are built. When they assemble the cup to body, these holes lock it up. I recommend you just get some CBC pads. They are good and you don’t have to wait. Even though Silicone is cheaper, CBC have different feels to them.

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**Author:** ![qpwoei12](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/qpwoei12/32/396_2.png) [@qpwoei12](https://forums.yoyoexpert.com/u/qpwoei12)\
**Post date:** [May 5, 2014, 11:29pm UTC](https://forums.yoyoexpert.com/t/protostar-owners-silicone/65965/3 "2014-05-05T23:29:13Z")

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If you use regular silicone instead of flowable it shouldn’t be a problem.

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**Author:** ![Trace](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/trace/32/620097_2.png) [@Trace](https://forums.yoyoexpert.com/u/Trace)\
**Post date:** [May 5, 2014, 11:55pm UTC](https://forums.yoyoexpert.com/t/protostar-owners-silicone/65965/4 "2014-05-05T23:55:31Z")

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I’ve used Red RTV in a Protostar and that thing held it’s silicone really well. No issues with the silicone dripping through the holes but can’t speak for anything other then Red RTV.