Cast iron drain pipe and no-hub connectors


I have a horizontal run of cast iron drain pipe underneath my basement slab (this section of slab has been removed) that I have cut and want to create new drain runs from PVC (for a bathroom). Before I have all my pipes laid out and refill the area with new concrete, I had a couple questions:
1) Where I have cut the cast iron pipe, should I apply some type of primer to the bare metal cross-section to protect it from corrosion?
1) Can the no-hub/hubless/Fernco connectors that have the solid stainless-steel band be embedded either partially or wholly in concrete? Should the no-hub connectors be protected from the soil and concrete by surrounding it with gravel or wrapping it in visquene or something else?
Todd
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Use the ferncos with solid rubber sleeves 2 stainless clamps and it will be fine just make sure to get them in equal on both sides slc snipped-for-privacy@yahoo.com wrote:

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Do you mean the type with 2 clamps total (1 on each end) or are you referring to one that has 2 clamps on each end (4 total)?
jim wrote:

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The one with1 clamp per end rubber sleeve in the middle slc snipped-for-privacy@yahoo.com wrote:

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