Urethane CS Block ID

BRAND: Insu-W-Rapid Americas LLCSKU FAMILY: UR-CSB-ID-4 STOCKED SIZES

Rigid polyisocyanurate (PIR) cylindrical-section block fabricated to a specified inner diameter (25"–87" ID stocked history), plain or asphalt-coated.

AT A GLANCE

Max service temp300°F (typ. polyurethane service limit per ASTM C591)

FormCurved segment block (cut to ID)

Thickness range2"–3", cut to specified inner diameter

StandardASTM C591

TECHNICAL DATAPER MANUFACTURER

Standard / specification	ASTM C591 (rigid cellular PIR); Nestaan / Elliot bunstock per IWRA 2026-Q3
Thermal conductivity (k)	0.19 @ 75°F (typ. aged design value for 2-pcf PUR/PIR)
Density	3.0 lb/ft3 nominal (3# PIR curved segments per IWRA 2026-Q3 price list)
Combustibility	Combustible — protect from high heat sources; cover per code

APPLICATIONS

Cold-service tanks and vessels
Large-diameter equipment
Refrigeration and process cold work

STOCKED SIZES & SKUS4 SIZES

SKU	SIZE
UR-CSB-ID-200-ID83	Urethane CS Block 2" 83" ID
UR-CSB-ID-200-AC-ID84	Urethane CS Block 2" 84" ID Asphalt Coated
UR-CSB-ID-300-AC-ID25	Urethane CS Block 3" 25" ID Asphalt Coated
UR-CSB-ID-200-ID87	Urethane CS Block 2" 87" ID

FEATURES

Closed-cell rigid foam
Low thermal conductivity
Fabricated to fit vessel radius
Optional asphalt vapor-barrier coating

PACKAGING & HANDLING

Packaging	Fabricated segments, bagged/cartoned
Handling & storage	Store indoors; protect from UV and open flame; asphalt-coated sections: avoid stacking in heat

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sales@suncityenergysupplies.com · (915) 555-0142Urethane CS Block ID · REV 1suncityenergysupplies.com

Data shown is nominal and per the manufacturer's published literature; verify against the current submittal and SDS before specifying. Sun City Energy Supplies stocks to spec, fabricates to size, and returns quotes the same business day. Informational only — not a warranty of fitness for a particular purpose.