Increase production, decrease downtime, and experience the confidence of using our SP Series. Tape Heads with HP and AP Series Carton Sealing Tapes. Shurtape’s packaging solutions provide a secure, reliable seal each and every time. With a signed agreement to purchase our HP or AP machine-length tape, we’ll give you a new durable, stainless steel SP tape head. Our SP tape head, with one-touch adjustment, is easy to load, easy to clean, and ready to work.