Armor Plate 700-4 is a flexibilized vinyl ester resin seal coat or top coat that contains 5% wax. It is applied after the area to be lined has been completely laminated. Armor Plate 700-4 should be applied to the laminated areas as soon as possible. AP 700-4 is a pigmented polyester resin. Its color may vary due to the exothermic reaction of the catalyst.

Chemical Resistance

Armor Plate 700-4 shows excellent chemical resistance to acids, salts, caustics, petroleum solvents, and some bleaches. Refer to the Wil-Cor, Inc. chart CEC-305, Corrosion Resistant Chart, for resistance to various chemicals. Contact the Wil-Cor, Inc. Technical Department for chemical resistance in other specific service conditions.

Physical properties

Color Light Gray
Weight / Gallon 10.5 lbs
Water Absorption 0.035%
Mixing Ratio 0.75-2.0 oz. catalyst / gal. resin
Pot Life @ 75 °F 10 min.
Heat Resistance 210 °F
Flash Point 90 – 95 °F
Shrinkage 0.004%
Shelf Life @ 77 °F minimum 6 months

Installation Recommendation

Wil-Cor, Inc. recommends supervision by Wil-Cor or that this product be installed by experienced fiberglass installers. Preparation, mixing and application information is provided for installers with adequate installation experience.


Armor Plate 700-4 is mixed with Armor Plate 60 (MEK Peroxide) catalyst. Use 1.25 to 2.0 oz. of MEK Peroxide for each gallon of Armor Plate 700-4 resin. The mixing ratio of resin : catalyst will vary with temperature.

Mix resin (part A) and Catalyst (part B) at the job site, immediately prior to application. The pot life of AP 700-4 is very short (10 – 15 min.) so only mix quantities that can be used during a 10-minute period.

Surface Preparation

Surfaces to which Armor Plate 700-4 is to be applied should be clean, dry and free from loose debris. Apply to the laminated area as soon as possible.


Armor Plate 700-4 may be applied with a brush, roller, squeegee or by spray equipment.


Armor Plate 700-4 is available in stock sizes of 1-gallon, 5-gallon pails and 55-gallon drums.

Coverage and Estimating

The approximate coverage of AP 700-4 is approximately 150 sq. ft. / gallon, depending on the surface texture.

Shelf Life

The expected shelf life of the Armor Plate 700-4 is a minimum of 3 months when sealed tightly and stored at temperatures around 77 °F.

Freight Classification

Resin Solution, Flammable Liquid


For Industrial Use Only! – Flammable Liquid

Resin Component

  • Causes eye or skin irritation. Always wear suitable clothing to minimize skin Contact.
  • Vapor caused headache, dizziness, nausea and unconsciousness. Area must be ventilated. If inhaled, remove victim to fresh air. Give artificial respiration if not breathing.
  • For eye Contact, flush with water immediately.
  • For skin Contact, wash with soap and water immediately. Remove contaminated clothing.
  • If swallowed, give large amounts of milk or water to drink and seek immediate medical attention.
  • Flammable. Keep away from all sparks, flames or heat. Extinguish fires with foam, dry chemical, carbon dioxide or water spray.

Hardener – AP 60 (Methyl Ethyl Ketone Peroxide)

  • Store in a cool place away from all sources of heat.
  • NEVER store near cobalt naphthenate or other promotors, accelerators or strong reducing agents.
  • Strong irritant. Ingestion can be fatal. If swallowed, induce vomiting and call physician.
  • For eye contact, flush with water for 30 minutes and call physician immediately.
  • For skin contact, wash with soap and water immediately. Remove contaminated clothing.

Before use, review Material Safety Data Sheet for further information. Read and follow the hazard information and first aid directions on each product label before using.