Don't.  Stretching is a much better option.  I have used a paper towl roll, a roll of duct tape, etc.  It is just too hard to cut without imperfections which will be where tears start. 

I've also cut multiple neck gaskets without a problem.  I start the cut using a knife but then find using very sharp kitchen shears works well to create a (mostly) nick free cut.

I just want to make a quick connection for those that did not already know.

oliver, who I am so glad is in our community, was referred to in the freestyle comp as "That Hippie Guy", and in subsequent post event conversations. His rides were stellar, although the judges all had to make a disqualification due to ride durations and total rides in the event. We all wondered who "That Hippie Guy" was and later that evening I got to meet him. Oliver is the bomb! We had a chuckle, and I just wanted to say welcome on the site. I was not sure if you would make it into the forum, but it is sweet to see you here!!!


RIGHT ON!!!

See ya on the River Oliver!

Better yet....Don't bother with latex gaskets....Get the Zone Shell with Latex free inner and outer gaskets.......Neck and cuffs have an inner, coated neoprene gasket for a waterproof seal, then and outer coated gasket cover ofr comfort and protection...Check it:

Since we're on the subject of latex seals- I was wondering if folks know about emergency repairs of tears of seals with super glue. I've made many in field fixes of torn neck seals for instance with the stuff. If posible pull the edges of the tear together to get an 1/8" or more overlap, spot weld along the seam using superglue, then glue longer portions until complete. You can even glue down a larger piece over the tear/seam to reinforce the repair. My neck seal is up to 3 layers thick in places and I've been using it tons this season (last fall the top edge was starting to get gummy and crack so I glued a 1/2" wide strip around it ). Might be able to postpone replacement till next season.  Carry an un opened tube and a piece of old gasket about 1/2" wide and 6" long in emergency repair kit and you may just become the hero of the moment when you are able to repair a suit at a lunch stop.