PRODUCT DATA SHEET
MW-SL- · REV 1 · Jul 2026
Pipe Covers · Mineral Wool
Mineral Wool SL
BRAND: Johns ManvilleSKU FAMILY: MW-SL-13 STOCKED SIZES
Water-repellent mineral wool pipe insulation, single-layer sections, for hot piping from 0°F to 1200°F.
AT A GLANCE
Max service temp1200°F
FormPre-formed pipe (single layer)
Thickness range1"–3"
FacingNone
StandardASTM C547
Flame / smoke5 / 0 (ASTM E84 / UL 723)
TECHNICAL DATAPER MANUFACTURER
| Standard / specification | ASTM C547 Types I, II, IV |
| Thermal conductivity (k) | 0.22 @ 75°F |
| Water-vapor sorption | <1% by wt (ASTM C1104) |
| Combustibility | Non-combustible per ISO 1182 |
APPLICATIONS
- Steam and condensate
- Hot process piping
- Power and industrial service
- Acoustic treatment
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 |
STOCKED SIZES & SKUS13 SIZES
| SKU | NOM. SIZE | WALL / 2ND | LENGTH |
|---|
| MW-SL-1000-100 | 10" | 1" | 3 ft |
| MW-SL-800-150 | 8" | 1.5" | 3 ft |
| MW-SL-400-200 | 4" | 2" | 3 ft |
| MW-SL-300-100 | 3" | 1" | 3 ft |
| MW-SL-075-200 | 0.75" | 2" | 3 ft |
| MW-SL-200-200 | 2" | 2" | 3 ft |
| MW-SL-1400-200 | 14" | 2" | 3 ft |
| MW-SL-100-200 | 1" | 2" | 3 ft |
| MW-SL-300-200 | 3" | 2" | 3 ft |
| MW-SL-400-150 | 4" | 1.5" | 3 ft |
| MW-SL-800-100 | 8" | 1" | 3 ft |
| MW-SL-400-100 | 4" | 1" | 3 ft |
| MW-SL-100-300 | 1" | 3" | 3 ft |
FEATURES
- Rated to 1200°F
- Water-repellent binder
- Non-combustible
- 5/0 flame-smoke
- Cuts cleanly with a knife
PACKAGING & HANDLING
| Packaging | Cartoned 3 ft half-sections |
| Handling & storage | Keep dry; store indoors; water-repellent but protect from standing water |
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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.