In the world of small enclosures, wall fitting boxes and similar there is little space and little fitting time so gasket profiles which slot in or stick on are often the first choice – they are time proven solutions to simple sealing requirements and are available ex-stock on quick delivery from our Online store in a variety of sizes. Generally speaking the push in type is a close fit into a channel on the door ( but could be on the frame) and seals onto a flat face while the self adhesive closed cell foam 
section is usually located on the inside of the door so that it seals onto a lip formed in the body/frame of the enclosure giving it the benefit of being protected by the lip of the door. Both are excellent solutions for many industrial situations.
Channel fitting or self-adhesive gasket?
