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Pipe Covers · Mineral Wool

Mineral Wool DL

BRAND: Johns ManvilleSKU: MW-DL-12 SIZES STOCKED
AT A GLANCE
Max temp1200°F
FormPre-formed pipe (double layer)
Size2" wall, double-layer construction
FacingNone

Water-repellent mineral wool pipe insulation furnished as nested double-layer sections for large pipe sizes; staggered joints reduce through-joint heat loss on hot lines to 1200°F.

↓ SPEC SHEET (PDF)↓ SDS (PDF)
STOCKED SIZES12 SIZES

Sizes are pipe inner diameter × insulation wall thickness. A 2" × 2.5" fits a 2" pipe with a 2.5" wall.

TECHNICAL DATA
StandardASTM C547 Types I, II, IV
Thermal conductivity (k)0.22 @ 75°F
Flame / smoke5 / 0 (ASTM E84 / UL 723)
Water-vapor sorption<1% by wt (ASTM C1104)
CombustibilityNon-combustible per ISO 1182
APPLICATIONS
THERMAL CONDUCTIVITY — K VS. MEAN TEMPBTU·IN/HR·FT²·°F
MEAN °F
75
200
300
400
500
k value
0.22
0.28
0.34
0.4
0.48
FEATURES
PACKAGING & PAIRS WITH
PackagingCartoned 3 ft nested half-sections
Handling & storageKeep dry; store indoors; water-repellent but protect from standing water
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