Most stock products have Star Seal, which offers the strongest support and leak resistance. Heavy duty or specialty custom products can be made with Gusset or Flat Seal.
High Performance Star Seal
Most common type
Eliminates gaps where leaks can occur
Distributes weight evenly
Maximizes carrying capacity
Sized in two dimensions, EX: 38 x 58
Flat Seal
Potential to leak liquids from the corners
Do not conform as well to the shape of can
Sized in two dimensions, EX: 38 x 58
Gusset Seal
Flat-style bag design
Both sides tucked in to form gussets
Sealed through four layers of film
(the middle of the bag has only two sealed layers)