Hudco Formula 4020FB

Beaded Wearing Compound

HUDCO 4020 FB is a specially formulated wearing compound that contains high wear resistance beads in a strong, durable epoxy matrix that is reinforced with ballistic grade aramid fiber for added wear resistance.  The beads are made of a high wear resistance material.  Because the beads in 4020 are small in size, the exposure surface has greater wear element to matrix ratio.  This results in improved wear resistance and material flow.

Typical Applications

HUDCO 4020 FB is excellent in a wide range of applications including chutes, screw conveyors, pneumatic conveying equipment, slurry pumps and other areas where high wear occurs.

Physical Properties

Specific Gravity


Mixing Ratio (R:H)

2:1 by Weight



Application Thickness

¼” – ½” or as desired

Pot Life

20 Minutes @ 75° F

Gel Time

30 Minutes @ 75° F

Initial Cure Time

3 Hours @ 75° F

Final Cure Time

3-4 Days @ 75° F

Temperature max

200° F




Curing Agent

Kit Weight


2 lbs.











Application Instructions

Surface Preparation: 
(A) Surface of substrates must be clean and sound. Remove grease, oil, or other foreign material with acetone, wire brushing, or sandblasting. Acid etching the surface is acceptable if followed by thorough flushing with clean water.
(B) Roughen surface by grinding or sandblasting (3-5 mil surface profile) Surface must be completely dry with a minimum surface temperature of 75° F before applying.
Mixing: Mix 2 parts of HUDCO Formula 4020 FB Resin to 1 part of HUDCO Formula 4020 FB Hardener by weight. Kits are supplied in the correct ratio. Ensure that the sides of the mixing container are scraped into the mixture. Mix several minutes, until consistent color is achieved.
Application: Apply product to prepared surface and use supplied tools to achieve desired finish.
Curing: At 75°F, product will gel in 30 min. Initial cure will occur in 3 hours. Final cure occurs in 3-4 Days. Curing can be accelerated by heating the applied product to 140°F. Product properties will also be improved by curing at this elevated temperature.
Safety Precautions
CAUTION: For Industrial Use Only. Keep Away From Children.
HUDCO Formula 4020 FB Resin contains epoxy resin which is harmful if swallowed. After prolonged exposure it may irritate skin and cause sensitization and/or dermatitis.
HUDCO Formula 4020 FB Curing Agent contains organic amine compounds which are harmful if swallowed. After prolonged exposure or repeated skin contact it may cause irritation, sensitization and/or dermatitis.
Emergency and First Aid Procedures


  • Eye Contact - Irrigate with clean water for 15 minutes and call a physician.
  • Skin Contact - Wash with soap and water.
  • Inhalation - Remove to fresh air and provide oxygen if necessary.
  • Ingestion - Call a physician at once. Give milk or white of egg beaten with water. Then give a teaspoon of salt in a glass of warm water to induce vomiting.
Protection Procedures
If used in a confined or an enclosed area, use an air supplied mask or respirator with canister for organic vapors and provide mechanical exhaust ventilation. Use protective gloves, safety glasses, and protective clothing. Avoid contact with skin and clothing. Contaminated clothing should be laundered before wearing again. Contaminated shoes should be thoroughly cleaned before wearing again.
HUDCO Formula 4020 FB Resin and Curing Agent should be stored in a cool, dry area. Shelf life is a minimum of one year in unopened containers when stored at 70° F – 85° F.

Because the storage, handling and application of these materials are beyond our control, we can accept no liability for the results of their use. Our liability is limited only to replacement of any material proven defective in manufacture. We suggest users try small applications to determine the suitability of the product for their intended use.