Pipe connector systems, devices and methods

A gasket comprising:

• a rounded sidewall defining a channel therethrough in a first direction, the sidewall comprising:
• a first sidewall portion having a first edge and a second edge that is opposite the first edge, the first and second edges extending generally in the first direction, and the first sidewall portion having a first thickness;
• a first membrane section connecting the first edge to the second edge, the first membrane section extending generally in the first direction, and the first membrane section having a second thickness, wherein the second thickness is less than the first thickness;
• a first half having a first outer end and a first inner end, the first outer end defining a first opening of the channel and having a first width;
• and
• a second half having a second outer end and a second inner end, the second outer end defining a second opening of the channel opposite the first end of the channel, the second end having a second width,
• wherein the first and second inner ends are connected at a middle portion having a third width, the third width is less than each of the first and second widths, and the membrane section defines an inner gap facing the channel and defines an outer gap facing away from the channel.