Rope caulk or caulking cord is a type of pliable

putty PuTTY () is a free and open-source terminal emulator, serial console and network file transfer application. It supports several network protocols, including SCP, SSH, Telnet, rlogin, and raw socket connection. It can also connect to a se ...

caulking Caulk (also known as caulking and calking) is a material used to seal joints or seams against leakage in various structures and piping. The oldest form of caulk consisted of fibrous materials driven into the wedge-shaped seams between board ...

formed into a rope-like shape. It is typically off-white in color, relatively odorless, and stays pliable for an extended period of time. Rope caulk can be used as caulking or weatherstripping around conventional windows installed in conventional wooden or metal frames (see glazing). It is also used as a form for

epoxy Epoxy is the family of basic components or Curing (chemistry), cured end products of epoxy Resin, resins. Epoxy resins, also known as polyepoxides, are a class of reactive prepolymers and polymers which contain epoxide groups. The epoxide fun ...

work, since epoxy does not adhere to this material. Rope caulk has also been applied to the metallic structure supporting the magnet for a dynamic speaker to cut unwanted resonance of the metal structure, leading to improved speaker performance. It has also been used as a sonic damping material in sensitive

phonograph A phonograph, later called a gramophone, and since the 1940s a record player, or more recently a turntable, is a device for the mechanical and analogue reproduction of sound. The sound vibration Waveform, waveforms are recorded as correspond ...

components.

History

Mortite brand rope caulk was introduced by the J.W. Mortell Co. of

Kankakee, Illinois Kankakee ( ) is a city in and the county seat of Kankakee County, Illinois, United States. Located on the Kankakee River, as of 2020, the city's population was 24,052. Kankakee is a principal city of the Kankakee-Bourbonnais-Bradley, IL MSA, Kan ...

in the 1940s, and called "pliable plastic tape". The trademark application was filed in March, 1943.{{Cite web, url=http://www.trademarkia.com/mortite-71459079.html, title=MORTITE Trademark of J.W. MORTELL COMPANY Serial Number: 71459079 :: Trademarkia Trademarks It was later marketed as "caulking cord". The company was later acquired by Thermwell Products.

Mortite

Mortite putty is a brand of rope caulk marketed under the Frost King brand. Its primary ingredient is

titanium dioxide Titanium dioxide, also known as titanium(IV) oxide or titania , is the inorganic compound derived from titanium with the chemical formula . When used as a pigment, it is called titanium white, Pigment White 6 (PW6), or Colour Index Internationa ...

; it has a

specific gravity Relative density, also called specific gravity, is a dimensionless quantity defined as the ratio of the density (mass of a unit volume) of a substance to the density of a given reference material. Specific gravity for solids and liquids is nea ...

of 1.34. It is listed by the state of California as containing ingredients known to the state to cause cancer or adversely affect reproductive health (a "P65 Warning").

Notes

Plastics Building engineering