Belzona 1391S
High Temperature Spray Coating
Spray-applied high temperature immersion coating for service up to 110°C (230°F).
A 2-part spray-applied high temperature coating for continuous immersion up to 110°C (230°F) with FDA and USDA approvals.
- SeriesBelzona 1000 Series
- Approvals2
- Documents6
Overview of Belzona 1391S
A two-component spray-applied high temperature coating system designed to operate under continuous immersion at operating temperatures up to 230°F (110°C). Applied by heated airless spray, suitable for steaming out up to 410°F (210°C).
Belzona 1391S exhibits excellent corrosion resistance at elevated temperatures and is resistant to a broad range of aqueous solutions, hydrocarbons and process chemicals. The 24-hour overcoat window allows large applications to be completed effectively and quickly, dramatically reducing downtime.
Key Benefits
Outstanding performance under elevated temperature conditions including dry heat and steam exposure
Excellent resistance to a wide range of chemicals including aqueous solutions, hydrocarbons, and process chemicals
Outstanding resistance to corrosion in salt spray and chemical environments
Optimized for airless spray application with negligible wear to spray equipment
100% solids formulation reduces health and safety risks in confined spaces with no shrinkage on cure
Application Areas
What this product handles, grouped by equipment area — each links to the full application.
Separators
7 applications- Condensate tanks & extraction pumpsBoiler feed water systems and condensate tanksLearn more
- Evaporators, de-aerators & autoclavesDe-aerators and evaporatorsLearn more
- Heat exchangers & condensersStorage tanks and condensersLearn more
- Oil/gas & water separatorsSeparators and slug catchersLearn more
- Scrubbers & absorber towersAbsorbers and scrubbersLearn more
- Knock-out drums & vesselsLP & HP knock-out drums and pipeworkLearn more
- Seawater filters & amine systemsSea water filters and MEA/MDEA systemsLearn more
Solids Handling Machinery
1 applicationTechnical Data
Mechanical Properties
- Compressive Strength (68°F cure)
- 11,058 psi (76.2 MPa)
- Compressive Strength (212°F cure)
- 21,442 psi (147.8 MPa)
- Compressive Modulus
- 2.02 × 10⁵ psi (1,393 MPa)
- Tensile Strength (68°F cure)
- 4,653 psi (32.08 MPa)
- Young's Modulus (68°F)
- 9.76 × 10⁵ psi (6,732 MPa)
- Flexural Strength (68°F)
- 6,400 psi (44.12 MPa)
- Flexural Strength (212°F)
- 5,500 psi (37.92 MPa)
- Shore D Hardness (68°F)
- 84
- Shore D Hardness (212°F)
- 86
- Impact Resistance (Izod, reverse notched, 68°F)
- 67.5 J/m
Adhesion
- Tensile Shear (Grit Blasted Steel, 68°F)
- 2,600 psi (17.92 MPa)
- Tensile Shear (Grit Blasted Steel, 212°F)
- 2,000 psi (13.79 MPa)
- Pull-Off Adhesion (Grit Blasted Steel, 68°F)
- 5,070 psi (34.96 MPa)
- Pull-Off Adhesion (Grit Blasted Steel, 212°F)
- 3,520 psi (24.27 MPa)
Heat & Environmental Resistance
- Heat Distortion Temperature (68°F cure)
- 131°F (55°C)
- Heat Distortion Temperature (212°F cure)
- 306°F (152°C)
- Dry Heat Resistance
- 482°F (250°C)
- Wet Heat Resistance
- 230°F (110°C) continuous immersion
- Steam-out Resistance
- 96 hours at 410°F (210°C); 5 weeks at 365°F (185°C)
- Atlas Cell Immersion
- No rusting or blistering after 6 months at 230°F (110°C)
Abrasion Resistance
- CS17 Wheels (Dry, 194°F cure)
- 24 mm³ loss per 1,000 cycles
- H10 Wheels (Wet, 68°F cure)
- 940 mm³ loss per 1,000 cycles
Electrical Properties
- Dielectric Strength
- 21.9 kV/mm
Working Life
- 68°F (20°C)
- 45 minutes
Cure Times by Temperature
At 50°F (10°C)
- Time until inspection
- 32 hours
- Time until full service
- 96 hours
- Dry post cure (if required)
- 32 hours
- Wet post cure (if required)
- 60 hours
At 68°F (20°C)
- Time until inspection
- 10 hours
- Time until full service
- 48 hours
- Dry post cure (if required)
- 10 hours
- Wet post cure (if required)
- 24 hours
At 86°F (30°C)
- Time until inspection
- 8 hours
- Time until full service
- 20 hours
- Dry post cure (if required)
- 8 hours
- Wet post cure (if required)
- 14 hours
At 104°F (40°C)
- Time until inspection
- 4 hours
- Time until full service
- 14 hours
- Dry post cure (if required)
- 4 hours
- Wet post cure (if required)
- 8 hours
Service Temperature Limits
- Lower temperature limit
- -40°C (-40°F)
- Upper temperature limit (dry)
- 250°C (482°F)
- Upper temperature limit (wet)
- 110°C (230°F) continuous immersion
Mixing & Application
Certifications & Approvals
Product PDFs
Gallery
Videos
Frequently Asked Questions
What is Belzona 1391S and how is it different from Belzona 1391T?
Belzona 1391S is a sprayable variant of the high temperature ceramic-filled coating system, designed for spray application on large surface areas. Belzona 1391T is the same family in a brushable form for hand application — choice between them depends on application method and area size.
What service temperatures does Belzona 1391S support?
Belzona 1391S is engineered for high temperature immersion service, suitable for protecting equipment in aqueous environments at elevated temperatures. Refer to the Product Specification Sheet for exact wet and dry service limits.
How is Belzona 1391S applied?
Belzona 1391S is applied using heated airless spray equipment over an abrasive-blasted substrate. The spray application enables fast coverage of large vessels, tanks, and pipework. Working life and overcoat windows must be observed per the Instructions for Use.
Related Products
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