Engineering solutions in the field of
lubricants and sealants

Materials: Molykote
Anti-Friction Coating Molykote D-21

Description

It is just the same coating as Molykote D-321R with the only difference: it contains more pure solid lubricants: chlorine and fluorine rate in solution is under 200 ppm.



Documentation

Technical Data Sheet - Molykote D-21 Material Safety Data Sheet - Molykote D-21 Спецификация - Molykote D-21

Operating temperatures

-180°C +450°C

Pre-packing

1kg
  • Applications
  • Friction units
  • Advantages
  • Problems to be Solved material
  • The combination of materials
  • Features

Applications

FEATURES

Air drying
Avoidance of stick-slip
High ageing resistance

APPLICATIONS

Threaded connections made of specific alloys for nuclear power stations (not first circuit, no contact with radiation). It should be applied and dried in the same way as for Molykote D-321R.

It is used in friction

  • Sliding bearings
  • Sliding guideways
  • Chains
  • Linear bearings
  • Enclosed gears
  • Open gears
  • Piston-cylinder-group (unit)
  • Cased control cables
  • Cased flexible shafts
  • Interference fits
  • Threaded connections
  • Strips
  • Spline / key joints
  • Electrical contacts

Advantages

  • Cold resistance
  • Termal (heat) resistance
  • Higher load carrying capacity
  • Chemical resistance
  • Working capacity in vacuum
  • Working capacity in dust
  • Radiation resistance
  • Good adhesion strength
  • Long service life
  • Good fretting corrosion protection
  • Emergency properties
  • Air drying
  • Can be painted over
  • Avoidance of stick-slip
  • Easy mounting / dismounting

Problems to be Solved material

  • Seizure
  • Stick-slip motion
  • Brinelling or false brinelling
  • Fretting corrosion
  • Dust sticking onto lubricating surfaces
  • Dust intrusion into lubricating points and abrasive wear
  • Lubricant destruction of chemically active medium exposure
  • Lubricant efficiency loss in vacuum
  • Lubricants leaking off or emission due to centrifugal forces
  • Frequent re-lubrication
  • Difficult mounting / dismounting
  • Liquid and consistent lubricants application failure

The combination of materials friction pair

  • Metal - Metal
Стандарт Показатель Ед. изм. Значение
ЦветСерый
Антифрикционные добавки (наполнители)Твердые смазочные материалы: дисульфид молибдена - 19%, графит - 5%
Прочие составляющиеНеорганический связующий агент (титанат), растворители
°СДиапазон рабочих температурот -180 до +450
°CТемпература вспышки23
г/см3Плотность при 20 °С1,07