
ACCESSORY · MATERIALS
BUTYL RUBBER SHEET 12
SHC 720-121
SHC 720-121 is a vapor barrier sheet formulated from butyl rubber compound.
AccessoryReinforcementTapeSheet
A vapor barrier finish for joints of low- and cryogenic-temperature insulation, accommodating expansion and contraction
LNG and petrochemical facilities
| Color | Black |
| Specific Gravity | 1.35~1.40 g/㎤ |
| Dimensions | Thickness: 1.2㎜ ±5% · Width: On request · Length: 20meter |
| Solids Content | 100% |
| Service Temp. | - 40 ~ 120℃ |
| Permeance | < 0.1 metric perms (ASTM E96) |
| Elongation | ≥ 150% (ASTM D412) |
| Tensile Strength | ≥ 5.0Mpa (ASTM D412) |




