ANNULAR SEALS
Bentonite sleeves make it easy to install an impermeable annular seal in one pass. Most wells can then be topped up with grout the same day.
Threaded into the casing string to provide positive placement of an impermeable annular seal below the water table. (Note: Bentonite Sleeves seal at a much slower rate than Quick Seal.) 1/2" and 3/4" models fit inside most 2" and 2-1/8" direct push casing, and when fully hydrated will seal holes up to 2.8". The 2" model fits in 3" and larger holes, and seals up to 3-3/4". 30" long units stack for longer seals.
SPECIFICATIONS
Dimensions: length - 30"; O.D. - 1.40" (1/2"
& 3/4" models), 2.8" (2" model)
Materials: PVC abrasion shield;
polyethylene sediment trap; paper sleeve filled with granular bentonite; mounted
on flush threaded Schedule 40 PVC pipe
Expansion times
(approx.):
1/2" & 3/4" models: 2" hole, 1 to 3 hr.; 2-1/4" hole, 3 to 6
hr.; 2-1/2" hole, 6 to 12 hr.
1-1/4" model: 3-3/4" hole, X to X hr.
2"
model: 3-3/4" hole, 3 to 6 hr.
| ITEM | DESCRIPTION |
| Bentonite Sleeve: | Provides impermeable seal below water table |
| 1/2" Model | For 1/2" well in up to 2.8" hole |
| 3/4" Model | For 3/4" well in up to 2.8" hole |
| 1-1/4" Model | For 1-1/4" well in up to 3-3/4" hole |
| 2" Model | For 2" well in up to 4" hole |
Bentonite Sleeve
DRILLERS SERVICE, INC. HICKORY, NC USA (800) 810-0243