Technical Front brake caliper seals

[busdennis]

On replacing my front brake pads the 1sliding pin on the Caliper was stuck and the seal perished, can these seals be bought separately as a quick Google search is only showing complete Caliper rebuild kits, could anybody provide a link or part number please. Thanks in advance

 

[jackwhoo]

Brakesinternational on www ?
Bigred on www ?

What year van? Engine size? Heavy chassis or normal?