NS-99 Stick 7"

Two-component epoxy stick for emergency repairs — no mixing tools needed, sets in 5 minutes.

NS-99 Stick is a 100% solids, mineral-reinforced epoxy repair compound in an easy-to-use stick form. Both the Base and Activator are contained in a single stick — simply cut or twist off the needed amount and knead with a gloved hand. No mixing tools or measuring required. It sets in 5 minutes and is ready for full service within 1 hour, making it the go-to for emergency repairs in the field. It bonds to metals, concrete, wood, ceramics, glass, and many plastics, and can be applied and cured underwater. NSF Standard 61 certified for use in contact with drinking water.

Item Numbers

Color Kit Size Product Code
White 7" 726564.03.57

General

  • Type: Amine Cured 100% Solids Epoxy — Rapid Cure Rebuilding Compound (Stick Form)
  • Color: White (when mixed)
  • Mix Ratio: 1:1 by volume — no measuring required; knead by hand
  • Viscosity: Putty
  • Solids by Volume: 100%
  • Weight per Gallon: 13.3 lbs (6.0 kg) — 7" stick = 4 oz (120 g)
  • Pot Life: 5 min/100 g at 72°F (22°C)
  • Work Life: 3 to 5 minutes after mixing
  • Sets in: 5 minutes — full service within 1 hour
  • Shelf Life: 2 years at 55°F – 95°F (13°C – 35°C)

Temperature Resistance

  • Dry service: Max 250°F (121°C)
  • Dry spike: Up to 450°F (232°C)
  • Temperature resistance varies with chemical exposure — consult Novoshield for immersion service.

Mechanical Properties

  • Abrasion: Excellent
  • Flexibility: Fair. Excellent with Polyester or Fiberglass Cloth.
  • Can be sanded, drilled, tapped, filed, and machined after cure.
  • Can be painted with epoxy, urethane, or acrylic topcoats.

Chemical Resistance

  • Water: Excellent
  • Alkalis: Excellent
  • Hydrocarbons: Excellent
  • Alcohols, Ketones: Excellent
  • Dilute Acids: Good

Bonds To

All metals, concrete, wood, ceramics, glass, and many plastics. Can be applied and cured underwater.

Certifications

Certified to NSF/ANSI Standard 61 for use in contact with drinking water.

Typical Applications

  • Fill cracks and voids
  • Rebuild rust and corrosion damage
  • Repair stripped threads
  • Repair leaking pipe and duct
  • Anchor equipment
  • Rebuild small parts

WARNING: See Material Safety Data Sheet (SDS) before handling this product.

Surface Preparation

Steel surfaces should ideally be abrasive blasted with chloride-free abrasive. Grind flat all burrs, weld seams, and sharp edges. Prime fresh blasted ferrous surfaces immediately with S-20 to prevent oxidation.

  • Exterior applications: SSPC SP-10 Near White Metal finish
  • Immersion applications: SSPC SP-5 White Metal — 4+ mil profile

Concrete surfaces should be degreased if oil or grease contamination is present, then high pressure washed, acid etched, and high pressure washed again until clean and free of all grease, oils, and surface laitance. Abrasive blast existing coatings to clean concrete. Prime as needed with EE-80 or EE-10/10.5.

Mixing

Cut or twist off the required amount. Knead with a gloved hand until the material reaches a uniform color — no measuring required.

If mixing is difficult, warm the stick to room temperature (72°F) or slightly above. A 7" stick unit can be warmed in a microwave for 10–15 seconds if needed.

Never thin this product.

Application

Apply to the surface within 2 minutes of mixing. Force the material into any cracks or holes and strike off excess, preferably with a tool moistened with clean water or Acetone.

  • When applying to a damp, wet, or slowly leaking surface, work the material forcefully into the surface and apply pressure until adhesion takes effect.
  • For best results, use damp nitrile gloved fingers for easier mixing, application, and a smoother finish.
  • Remove excess material before hardening begins — work life is 3 to 5 minutes.

Application Temperature

  • Material: 55°F – 95°F (17°C – 35°C)
  • Substrate: 45°F – 105°F (7°C – 40°C)
  • Max temp differential between material and substrate: 10°F (5°C)
  • Dew point: Substrate must be minimum 5°F (3°C) above dew point
  • Max relative humidity: 90%

Do not use gas, oil, or kerosene heaters — these leave residue on metal surfaces that will compromise adhesion. Use electric heaters or heat lamps only.

Overcoat & Cure Times (at 77°F / 25°C)

  • Brush, roller, or squeegee recoat window: 1 to 2 hours (while still soft but tack-free)
  • Spray recoat window: 2 to 12 hours
  • Full cure before immersion: 72 hours at 77°F — add 1 hour per 10°F below 77°F
  • Force cure (aggressive environments): 8 hours at 150°F (66°C), or 2 hours at 250°F (121°C)

If the overcoat window is exceeded, abrade the surface with coarse sandpaper, a grinder, or brush blast, then wipe with MEK or Acetone before recoating.

Clean Up

Clean tools immediately after use.

  • Standard: M.E.K., Acetone, or similar
  • Solvent-controlled environments: 98%+ Isopropyl Alcohol

Manufacturer makes no warranty either expressed or implied including warranties of merchantability or fitness for a particular purpose for this product. The information contained herein is provided in good faith and believed to be true and accurate. Contact our technical team for specific application guidance.