40 Custom design of non-metal seals for use in pipe and tube repair; custom design of sealing and insulating materials; custom design of packing material for forming seals; custom design of sealing plugs made primarily from polymer; and custom design of temporary resilient polymeric tube or pipe plugs; custom manufacturing of non-metal seals for use in pipe and tube repair; custom manufacturing of sealing and insulating materials; custom manufacturing of packing material for forming seals; custom manufacturing of sealing plugs made primarily from polymer; and custom manufacturing of temporary resilient polymeric tube or pipe plugs