How many components does Plasite 4300 have and what is the mixing sequence?

Plasite 4300 is a 4-component system (Parts A, B, C, D). Mechanically mix Part A, then sift in Part B while mixing. Add Part D (promoter) next. CAUTION: Parts A+B+D may be pre-mixed up to 72 hours before adding Part C. Add Part C (catalyst) last. Parts C and D must NEVER come into direct contact — any direct contact can cause fire or explosion.

Plasite 4300 - Vinyl Ester Lining for Aggressive Chemical Tanks

Q: What is the coverage rate for Plasite 4300?

Plasite 4300 covers approximately 960 mil·ft²/gal (89.2 m² per 25 microns/gal), based on field use including typical spray loss. Conventional spray equipment may reduce coverage by approximately 20%. The recommended total system is 35–45 mils applied in 2–3 multi-pass coats.

Q: What is the pot life for Plasite 4300?

Pot life is 1.5 to 2.5 hours in 1-gallon cans and 1.5 to 2 hours in 5-gallon cans at 70–90°F (21–32°C) material temperature. Material temperatures above 90°F significantly reduce pot life. Do not extend pot life by mixing newly catalyzed coating into coating near the end of its pot life.

Q: What surface preparation is required for steel?

For immersion service, abrasive blast steel to SSPC-SP10 (Near-White) with a minimum 4 mil (100 micron) dense, sharp anchor profile per ASTM D 4417. For non-immersion service, SSPC-SP6 is acceptable. All defects exposed by blasting must be repaired prior to coating.

Q: What is the temperature resistance of Plasite 4300?

Plasite 4300 has a continuous dry temperature resistance of 380°F (193°C) and non-continuous resistance to 460°F (238°C). It is thermal shock tested from -70°F to 200°F (5 cycles) and from 40°F to 400°F (10 cycles) with no adverse effect.

Q: Does Plasite 4300 require force curing for immersion service?

Yes. Ambient cure at 70°F takes 10 days and at 90°F takes 7 days. Force curing is required for immersion service and accelerates cure significantly: 6 hours at 150°F, 10 hours at 140°F, or 18 hours at 130°F, for example. Allow a 2–5 hour air dry before raising temperature in 30°F increments every 30 minutes.

Plasite 4300 - Vinyl Ester Lining for Aggressive Chemical Tanks

by Carboline

$546.66 - $2,512.61

$546.66

$546.66 - $2,512.61

$546.66

Plasite 4300 is a high-performance vinyl ester lining designed for the most aggressive chemical tank and immersion environments. Combining a vinyl ester resin with a specialized curing system and inert flake pigment, Plasite 4300 delivers outstanding chemical and physical resistance as a thick-film lining for tank service and severe-exposure maintenance coating.

Applied in 2 to 3 multi-pass spray coats to a total dry film thickness of 35–45 mils, Plasite 4300 is engineered for long-term immersion service in chemical processing, industrial wastewater, pulp and paper, power generation, and other environments where coating failure is not an option.

Color: Grey 0700

Plasite 4300 Product Data Sheet >

Here are some key features:

Extreme Chemical Resistance: Vinyl ester chemistry provides broad resistance to acids, caustics, solvents, and many aggressive chemical exposures. Ideal for tank linings exposed to chemicals that would compromise epoxy or polyurethane systems.
Thick-Film Build: Applied at 35–45 mils total DFT in 2–3 multi-pass coats, providing a robust, pinhole-resistant barrier for demanding immersion service.
Thermal & Mechanical Toughness: Continuous dry temperature resistance of 380°F (193°C), non-continuous to 460°F (238°C). Thermal shock tested from -70°F to 200°F and 40°F to 400°F with no adverse effect. Konig Pendulum Hardness of 152 seconds.

Coverage Rate: 960 mil·ft²/gal theoretical (field-verified including typical spray loss). Coverage from conventional spray equipment may be approximately 20% lower — plan quantities accordingly. The recommended total system thickness is 35–45 mils, applied in 2–3 coats.

Find the full product list of Carboline products here >

Plasite 4300 is self-priming to steel for immersion service (SSPC-SP10 surface prep required). For concrete substrates, Dudick Primer 27, Scratch-Coat 800, or Vapor Stop primers are available to address outgassing, surface voids, and moisture vapor transmission. For full application guidance, refer to the product data sheet or contact our team.

Contact our customer support today to discuss your project:
(800) 567-5358

PLASITE 4300 IS SOLD IN 1-GALLON AND 5-GALLON KITS, INCLUDING PARTS A, B, C & D.

WARNING: PARTS C AND D MUST NEVER COME INTO DIRECT CONTACT — MIXING SEPARATELY INTO THE COATING IS REQUIRED. SEE PDS.

Product type: Vinyl Ester Thick-Film Tank Lining & Maintenance Coating
Color: Gray (0700)
Total DFT: 35–45 mils (889–1,143 microns) in 2–3 coats
Application Method: Airless Spray (preferred) or Conventional Spray · Brush for repairs only
Mixing: 4-component system (Parts A, B, C, D) — follow PDS mixing sequence exactly
Thinner: Plasite Thinner 20 or Thinner 76 (2–10%); Plasite Thinner #71 for cleanup

For specific project requirements or additional details, please refer to the Carboline datasheet.

Quantity

Application System

Area to cover (sq ft)

Total DFT target (mils)

Spray method

Compatible Thinners

Thinner	Use	Max Rate
Plasite Thinner 20	Primary application thinner · recoat coats (medium evaporation)	2–10% general · 2–5% recoat
Thinner 76	Alternative application thinner — interchangeable with Thinner 20	2–10% general · 2–5% recoat
Plasite Thinner #71	Cleanup only — not for application thinning	Cleanup use only

🔥 Critical: Parts C (catalyst) and D (promoter) must never come into direct contact with each other. Add each separately into the mixed A+B base in the correct order. See PDS mixing instructions before use.

⚠ Only Carboline-approved thinners may be used. Use of other thinners may adversely affect performance and void the warranty. Each recoat coat must be diluted 2–5% with Plasite Thinner 20. Consult Carboline Technical Service for unusual thinning requirements.

Recommended Coating Systems

Steel — Two-Coat Self-Priming Immersion System

First Coat Plasite 4300 Self-priming · multi-pass spray

→

Second Coat Plasite 4300 35–45 mils total DFT · force cure for immersion

Steel prep: SSPC-SP10 (Near-White blast) with minimum 4 mil dense, sharp anchor profile per ASTM D 4417. Self-priming to steel — no separate primer required. Immersion service requires force cure at elevated temperature.

Steel — Three-Coat System (Maximum Film Build)

First Coat Plasite 4300 Self-priming · multi-pass spray

→

Second Coat Plasite 4300 Dilute 2–5% with Thinner 20

→

Third Coat Plasite 4300 35–45 mils total DFT · force cure

Recommended when using conventional spray equipment, which may reduce coverage by ~20% vs. airless. Consult Carboline Technical Service for deviations from the 35–45 mil total DFT recommendation.

Frequently Purchased Together

Concrete Surface Prep

Carboguard 501

Solvent-free epoxy filler for filling voids, bugholes, and surface irregularities in concrete before lining. Excellent bond strength and chemical resistance.

$832.61 / 3.6-gal kit

Primary application thinner for Plasite 4300. 2–10% for general use; 2–5% for recoat coats. Medium evaporation rate.

Call (800) 567-5358

Call to Order

Thinner
76

Alt. Application Thinner

Thinner 76

Alternative to Plasite Thinner 20 for application thinning. Same rate: 2–10% general, 2–5% recoat. Interchangeable per PDS.

Specified cleanup thinner for Plasite 4300. Not used for application thinning — cleanup only. In case of spillage, absorb and dispose per local regulations.

Call (800) 567-5358

Call to Order

Product Specs — Plasite 4300

Plasite 4300 — Vinyl Ester Thick-Film Tank Lining & Maintenance Coating by Carboline.
A high-chemical-resistant vinyl ester resin combined with a specialized curing system and inert flake pigment, engineered for tank lining service and severe-exposure maintenance. Applied in 2–3 multi-pass spray coats to a total DFT of 35–45 mils. Outstanding resistance to a broad range of acids, caustics, solvents, and oxidizing chemicals. Self-priming to steel with the correct surface preparation. Proven performance in chemical processing, pulp & paper, power generation, and industrial wastewater.

✓ 35–45 mil thick-film immersion lining • ✓ Self-priming to steel • ✓ Broad chemical resistance • ✓ Thermal shock tested

✏️ Need a project quote? Request Online

📞 Questions? Call (800) 567-5358 — Mon–Fri 8AM–5PM EST

Plasite 4300 by Carboline

Plasite 4300 vinyl ester thick-film tank lining by Carboline — aggressive chemical immersion service — Plasite 4300 — Vinyl Ester Tank Lining & Maintenance Coating

Shipping Map — Carboline Delivery Timing

Carboline US regional warehouse shipping map showing typical 2, 3, and 4-day delivery transit zones — Typical transit times vary by destination zone. Click map to enlarge.

Shipping & Packaging

Call (800) 567-5358 for pricing and logistics questions.

Carboline orders ship from regional warehouses nearest to your location, with full product stock maintained at each facility.

Most orders ship within 2–3 business days of order placement. Transit times shown on the map are typical but not guaranteed.

Available sizes:
1-gallon kit (Parts A, B, C & D) — approx. 12 lbs
5-gallon kit (Parts A, B, C & D) — approx. 60 lbs

Shelf Life at 75°F (24°C):
Part A: 12 months • Part B: 24 months
Part C: 12 months • Part D: 24 months
Cooler storage extends shelf life. Store indoors.

Coverage Rates

Recommended Total DFT: 35–45 mils (889–1,143 microns) applied in 2–3 multi-pass spray coats for immersion service.

Coverage rate is verified from field use on small jobs and already accounts for typical spray loss, material loss in can, and minor shrinkage. Conventional spray equipment may reduce coverage by approximately 20% — plan kit quantities accordingly.

Basis	Coverage Rate	Notes
Field-verified (all spray methods)	960 mil·ft²/gal \| 89.2 m²/25 µm/gal	Includes typical spray loss & material loss
Conventional spray reduction	Approx. 20% lower than above	Plan additional material when using conventional equipment
Total system DFT	35–45 mils (889–1,143 µm)	2–3 multi-pass coats for immersion service

Source: Carboline Plasite 4300 PDS, February 2025 (doc 345P). Consult Carboline Technical Service for deviations from recommended film thickness.

Performance Data

Test	Result
Abrasion Resistance (Taber CS-17, 1000g)	31 mg avg. loss per 1,000 cycles
Surface Hardness (ASTM D4366-84)	Konig Pendulum: 152 sec (glass = 250 sec)
Elongation (ASTM D638)	1.5%
Thermal Shock	Unaffected: −70°F to 200°F (5 cycles); 40°F to 400°F (10 cycles)
Density	94.4 lbs/ft³ (0.31 lbs/ft² at 40 mils)

Tests conducted on film cured at 150°F (65.6°C). Laboratory conditions — field results may vary.

Technical Specifications

Property	Value	Notes
Generic Type	Vinyl Ester	Thick-film lining & maintenance coating
Color	Gray (0700)	—
Total DFT	35–45 mils (889–1,143 µm)	2–3 multi-pass spray coats for immersion service
Components	4-Part System (A, B, C, D)	See mixing sequence — Parts C & D must never contact each other directly
Pot Life @ 70–90°F	1.5–2.5 hrs (1-gal) / 1.5–2 hrs (5-gal)	Reduced significantly above 90°F — do not extend by mixing in fresh material
Thinning	2–10% (general) / 2–5% (recoat)	Plasite Thinner 20 or Thinner 76
Cleanup	Plasite Thinner #71	—
VOC — As Supplied	0.56 lbs/gal (67 g/L) ±2%	—
VOC — Thinned 5% (Thinner 76 or #20)	0.85 lbs/gal (102 g/L) ±2%	—
Dry Temp. Resistance — Continuous	380°F (193°C)	—
Dry Temp. Resistance — Non-Continuous	460°F (238°C)	Limited short excursions only
Density	94.4 lbs/ft³ \| 0.31 lbs/ft² at 40 mils	—
Primer	Self-priming to steel (with correct prep)	Concrete requires Dudick Primer 27, Scratch-Coat 800, or Vapor Stop as applicable
Recoat Window	3–10 hrs (set) — within 30 days max	Topcoat before 24-hr cumulative sunlight exposure or 130°F surface temp exceedance
Flash Point — Part A	74°F (23°C)	Flammable — handle with care
Flash Point — Part B	None	—
Flash Point — Part C	51°F (11°C)	Flammable — handle with care
Flash Point — Part D	142°F (61°C)	—
Shelf Life — Part A & C	12 months at 75°F (24°C)	Cooler storage extends shelf life
Shelf Life — Part B & D	24 months at 75°F (24°C)	Store indoors
Shipping Weight — 1-gal kit	Approx. 12 lbs	Parts A, B, C & D included
Shipping Weight — 5-gal kit	Approx. 60 lbs	Parts A, B, C & D included

Source: Carboline Plasite 4300 Product Data Sheet (February 2025, doc 345P).

Mixing Instructions — 4-Component System

🔥 CRITICAL SAFETY WARNING: The promoter (Part D) and the catalyst (Part C) must NEVER come into direct contact with each other. They must be added separately into the coating (Parts A & B). Direct contact between unmixed Part C and Part D can cause fire or explosion. Wear a face mask during high-speed mixing. Avoid breathing dust.

Step 1: Pre-mix Part A using a mechanical high-speed mixer with a good vortex.

Step 2: While continuing to mix Part A, gradually sift in Part B until a homogeneous liquid free of unmixed pigment particles is achieved (approximately 10–15 minutes). Scrape bucket sides thoroughly.

Step 3: While continuing to mix, add the entire measured amount of Part D (liquid promoter) until no color streaking is visible. Allow to cool if material temperature rises.

Note: Parts A, B, and D may be pre-mixed up to 72 hours prior to adding Part C.

Step 4: Add Part C (catalyst) and the necessary amount of Plasite Thinner 20. Mix an additional 3–5 minutes.

Continuous agitation during use is required.

Kit Components

Component	1-Gallon Kit	5-Gallon Kit
Part A (Resin)	~3/4 gal in 1-gal container	~3.75 gal in 6-gal container
Part B (Pigment)	~5.5 lbs in 1-gal container	~28 lbs in 5-gal container
Part C (Catalyst)	~3.5 fl oz in 6 oz plastic bottle	~18 fl oz in 1-qt plastic bottle
Part D (Promoter)	<0.5 fl oz in 2 oz plastic bottle	<2.4 fl oz in 6 oz plastic bottle

Thinning

Condition	Thinning Amount	Approved Thinner
General application / higher temperatures	2–10%	Plasite Thinner 20 or Thinner 76
Topcoating previously applied films	2–5%	Plasite Thinner 20
Cleanup	As needed	Plasite Thinner #71

⚠️ Do not attempt to extend pot life by mixing newly catalyzed coating into coating near the end of its pot life. Material temperature above 90°F (32°C) significantly reduces pot life.

Application Equipment Guidelines

Method	Equipment Specification
Airless Spray (Preferred)	Min. 3.0 GPM output · 3/8" I.D. min. material hose · 0.025" or larger fluid nozzle · 1,800–2,200 PSI output · 12" min. spray width · Remove all screens from pump and gun · Continuous agitation required
Conventional Spray	59ASS fluid nozzle · 251 air cap · 559SS needle · ~50 psi pot pressure · ~60 psi atomizing pressure · Standard production-type pressure pot with dual regulators and lid-mounted agitator · Heavy-duty trigger spring recommended · Continuous agitation required · Note: may reduce max film-build capability and coverage rate by ~20%
Brush	For repairs and touchup only. Do not brush-apply on areas larger than 1 ft² (0.093 m²).

Application technique: Apply using a multi-pass spray system. Hold gun perpendicular to surface at approximately 14 in (36 cm). Apply horizontal and vertical passes with 50% overlap. Pay special attention at overlaps and welds to avoid excessive film build.

Compatible Substrates & Surface Preparation

All surfaces must be clean and dry before application. Remove all dirt, dust, oil, and contaminants that could interfere with adhesion.

Substrate / Service	Preparation Requirement
Steel — Immersion Service	SSPC-SP10 (Near-White blast) · Min. 4 mil (100 µm) dense, sharp anchor profile per ASTM D 4417 · Repair all defects exposed by blasting
Steel — Non-Immersion Service	SSPC-SP6 (Commercial blast)
Aluminum	Contact Carboline Technical Service
Concrete / CMU	Per NACE No. 6/SSPC-SP 13 · Abrade to remove laitance and loose concrete · Profile per ICRI CSP 5–7 · Use Dudick Primer 27 (outgassing), Scratch-Coat 800 (voids), or Vapor Stop (MVT) as needed

Application Conditions

Condition	Material	Surface	Ambient	Humidity
Minimum	70°F (21°C)	60°F (16°C)	60°F (16°C)	0%
Maximum	90°F (32°C)	100°F (38°C)	100°F (38°C)	80%

Coating may be applied at a surface temperature as low as 60°F (16°C), but the surface must be raised to a minimum of 70°F (21°C) within 12 hours of application to obtain polymerization. When surface temperatures exceed 100°F (38°C), contact Carboline Technical Service for special instructions.

⚠️ Any moisture from condensation or any other source will inhibit cure on freshly applied coating before it reaches a tack-free stage.

Curing Schedule

Ambient cure schedule at 50% RH.

Surface Temp.	Ambient Cure Time
70°F (21°C)	10 Days
90°F (32°C)	7 Days

Force Cure Schedule (Immersion Service)

Surface Temp.	Cure Time
110°F (43°C)	72 Hours
120°F (49°C)	38 Hours
130°F (54°C)	18 Hours
140°F (60°C)	10 Hours
150°F (66°C)	6 Hours
160°F (71°C)	4.5 Hours
170°F (77°C)	3.5 Hours
180°F (82°C)	2.5 Hours
190°F (88°C)	2 Hours
200°F (93°C)	1.75 Hours

⚠️ Allow a 2–5 hour air dry at 70–100°F before raising temperature. Raise in increments of approximately 30°F every 30 minutes until the target force cure temperature is reached.

Recoating & Lining Repair

Coating may be overcoated after initial set, which normally occurs in 3–6 hours at 70°F (21°C) with proper ventilation. Set time decreases as surface temperature increases. The following coat must be applied within 30 days. Each subsequent coat must be diluted approximately 2–5% with Plasite Thinner 20.

⚠️ Do not allow coating exposed to an accumulation of 24 hours of sunlight or surface temperatures above 130°F (54°C) before topcoating — this may result in intercoat disbondment. Shade with tarps if necessary.

⚠️ Physical contact (foot traffic, scaffolding) requires a minimum of 10 hours at 70°F with ventilation before proceeding. Previously applied coats must reach a non-tacky state first.

Lining Repair: Clean damaged area and remove all contaminants and loose coating. Abrasive blast exposed substrate to original specification. Feather original coating not less than 2 in (5 cm) from damaged area. Apply coating by brush or spray. Do not brush-apply on areas larger than 1 ft² (0.093 m²).

Good to Know Before You Buy

⚠️ What to Know Before You Buy

This is a 4-component system with a critical mixing sequence — read the PDS before ordering. Parts C (catalyst) and D (promoter) must never come into direct contact. They must be added to the coating separately, in the correct order. If you are unfamiliar with multi-component vinyl ester systems, call us before you start — we can walk you through it.
Plan your material quantities carefully — the recommended system is 35–45 mils total. That means 2–3 full multi-pass spray coats. Conventional spray equipment can reduce coverage by approximately 20% vs. airless. Factor this in when calculating how many kits to order.
Immersion service requires either a long ambient cure or a heated force cure — confirm your capability before ordering. Ambient cure at 70°F takes 10 days. Force curing at 150°F takes 6 hours. The surface temperature must also reach at least 70°F within 12 hours of application. If your project cannot meet these conditions, contact us to discuss alternatives.
Topcoat window is strict. Do not allow an applied coat to accumulate 24 hours of direct sunlight or reach surface temperatures above 130°F before the next coat is applied. Use shade tarps if needed. Exceeding this window risks intercoat disbondment.

Frequently Asked Questions — Plasite 4300

What is the coverage rate for Plasite 4300?

Plasite 4300 covers approximately 960 mil·ft²/gal (89.2 m² per 25 microns/gal), based on field use including typical spray loss. Conventional spray equipment reduces coverage by approximately 20%. The recommended total system is 35–45 mils applied in 2–3 multi-pass coats.

How do I mix Plasite 4300's 4-component system?

Mix Part A mechanically, then sift in Part B. Add Part D (promoter) next and mix until uniform. Parts A+B+D may be pre-mixed up to 72 hours before use. Just before application, add Part C (catalyst) and thinner. Critical: Parts C and D must never come into direct contact — fire or explosion can result. Mix each separately into the combined A+B base.

What is the pot life for Plasite 4300?

Pot life is 1.5–2.5 hours in 1-gallon cans and 1.5–2 hours in 5-gallon cans at 70–90°F (21–32°C). Material temperatures above 90°F significantly reduce pot life. Do not extend pot life by mixing fresh material into a batch near the end of its pot life.

What surface preparation is required for steel?

For immersion service, abrasive blast steel to SSPC-SP10 (Near-White) with a minimum 4 mil (100 micron) dense, sharp anchor profile per ASTM D 4417. Repair all defects exposed by blasting. For non-immersion service, SSPC-SP6 is acceptable. For aluminum or concrete, contact Carboline Technical Service.

What is the temperature resistance of Plasite 4300?

Continuous dry temperature resistance is 380°F (193°C). Non-continuous (short excursions) resistance is 460°F (238°C). It is thermal shock tested from −70°F to 200°F (5 cycles) and from 40°F to 400°F (10 cycles) without adverse effect.

Does Plasite 4300 require force curing for immersion service?

Not always, but force curing dramatically accelerates the process. Ambient cure at 70°F requires 10 days. Force curing ranges from 72 hours at 110°F down to 1.75 hours at 200°F. Allow a 2–5 hour air dry before raising temperature in 30°F increments every 30 minutes. Surface temperature must reach at least 70°F within 12 hours of application.