The 3M™ Riveters Tape 685 transparent film has a green 1.7 mil (.043 mm) polyester film adhesive and a rubber-strip coating along the edges of the tape. The transparent, tack-free center window also improves visibility and accuracy during the riveting process. - 3M riveters tape 685 is a zone-coated polyester film tape with a tack-free center window for use in holding rivets in place both prior to and during riveting. During riveting, helps ensure easy visibility of rivets and no adhesive transfer to rivet heads.