PRODUCT DATA SHEET
SEAL-9061- · REV 1 · Jul 2026
Ancillaries · Sealants & Coatings
Foster 90-61 Gallon
BRAND: Foster (H.B. Fuller)SKU FAMILY: SEAL-9061-1 STOCKED SIZE
Foster 90-61 CRYOLAR 1K Vapor Stop Sealant — ready-to-use, one-component elastomeric synthetic-rubber sealant forming a vapor-tight barrier film on cryogenic insulation systems (LNG, ethylene, ammonia service).
AT A GLANCE
Max service temp−320°F to 250°F at coated surface (FSTM 203)
FormOne-component vapor stop sealant (1-gal)
TECHNICAL DATAPER MANUFACTURER
| Water-vapor sorption | Water vapor permeance <0.01 perm @ 20–25 mil dry (ASTM F1249) |
APPLICATIONS
- Vapor stops on insulated cryogenic pipelines and equipment
- Sealing seams in low-temperature vapor-tight systems
- PUR/PIR and FOAMGLAS system vapor sealing
STOCKED SIZES & SKUS1 SIZES
| SKU | SIZE |
|---|
| SEAL-9061-1G | Foster 90-61 Gallon |
FEATURES
- One-component, ready to use — no mixing
- <0.01 perm vapor barrier at 20–25 mil dry film
- Spans −320°F to 250°F at the coated surface
- Bonds to PUR/PIR, cellular glass, aluminum, steel and masonry
- Elastomeric film handles cryogenic thermal cycling
PACKAGING & HANDLING
| Packaging | 1-gallon can |
| Handling & storage | Solvent-based and flammable — ventilate, no ignition sources; apply tack coat 2 gal/100 ft² with Mast-a-Fab mesh embedded, finish coat to ≥23 mil dry film; allow to fully dry before covering |
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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.