Patco Tapes Guide - 1800, D9100, 9425FR, 5565FR, 8300

Patco makes film tapes for aircraft sealing, corrosion inhibition and surface protection. The line covers floor-joint waterseals and galley wet seals in the wet areas of a cabin, a lightweight moisture and corrosion barrier for seat tracks and cargo areas, a removable film that protects finished surfaces during maintenance, and one exterior tape for leading edges and struts. Patco part numbers are named directly on Boeing, Airbus, Bombardier and Fokker documentation.

Patco D9100 is the waterseal tape for sealing floor joints in wet areas, approved to Boeing BMS 8-346 Type I and Type II. Its elastic polyurethane film moves with the airframe and it is repositionable during application. For galley and lavatory wet seal work in a black finish, Patco 1800 is the alternative.

Both are polyurethane films and both carry Boeing BMS 8-346, but they answer different callouts and do different jobs. The D9100 is the waterseal for floor joints, listed to Type I and Type II, and is stocked up to 36 inches wide. The 9425FR, sold as SealDry, is a lighter moisture and corrosion barrier at 6.0 mil and 5.0 ounces per square yard, listed to Type I Class 3, and it adds Airbus A2MS 535-007 and Bombardier BAMS 535-007. Match the Type and Class on your drawing rather than choosing on construction.

Patco 5565FR is the removable one. It is a 5.5 mil LDPE film that stretches to 500 percent, conforms over contours and lifts away with no residue when the work is finished, and it meets FAR 25.853(a) so it can stay on through an interior refurbishment. It comes clear or in high-visibility orange, by the case. For exterior surfaces that need permanent protection, the tape is Patco 8300 instead.

Patco 8300. It is a 14.5 mil non-yellowing polyurethane film on a die-cuttable kraft liner, rated from −40°F to 275°F, built to take rain erosion, UV and abrasion on leading edges, struts and stabilizers. It holds Fokker FK05-193 and is printable and paintable. Note that it is not a flame-retardant product and is not intended for cabin interior use.

No. Four of the five are: D9100, 1800, 9425FR and 5565FR all meet FAR 25.853(a). The 8300 is not a flame-retardant product — it is an exterior protective film. If your drawing calls out a flame-retardant material for a cabin or cargo location, the 8300 is not the tape, whatever else it offers.

Patco 9425FR, sold as SealDry, is a lightweight self-extinguishing polyurethane film with a hydrophobic acrylic adhesive. It forms a moisture barrier and inhibits corrosion at seat tracks and in cargo areas, at 6.0 mil and 5.0 ounces per square yard so it adds very little weight. It carries Boeing BMS 8-346 Rev. E Type I Class 3, Airbus A2MS 535-007 Rev. A Type VI, Bombardier BAMS 535-007 Rev. B Type VI and FAR 25.853(a), and is available in widths up to 48 inches.

It varies by product. The D9100 is available as single rolls or full cases, and the 1800 as single rolls. The 9425FR has a three-roll minimum on the 2 and 3 inch widths, so although the 2 inch works out at $126.65 a roll the smallest order is $379.95; the 24 and 48 inch widths are sold as single rolls. The 5565FR is case-only in every width and color. The 8300 has a minimum order that changes with width. Tell us the quantity you need and we will confirm what that works out to.

Patco is the film-tape specialist for aircraft sealing, corrosion inhibition and surface protection. Polyken is the broader line — cloth, fiberglass, foil and vinyl constructions covering carpet mounting, cargo compartments, speed tape repair, military packaging and stage work. Both are named on OEM documentation and both are made in the USA. See our Polyken vs Patco comparison for the two lines side by side.

A Certificate of Conformance is included with every order where available. It is what ties the roll you received to the specification your drawing calls out, so tell us the callout when you order and we will make sure the paperwork names it.