Glazing Seal
Genuine Elite Greenhouses Glazing Seal. We sell the neoprene type which slides into Elite's glazing bars when you build a new greenhouse. This has been used by Elite since around the mid 90's.
If you have an older Elite greenhouse we also sell the non setting butyl mastic type that "sticks" to the glass and the glazing bars. This tends to be difficult to remove totally and prevents the modern seal from sliding into the bars. We generally find it's best to replace like for like.